1 /*
   2  * Copyright (c) 1994, 2024, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.lang;
  27 
  28 import java.lang.annotation.Annotation;
  29 import java.lang.constant.ClassDesc;
  30 import java.lang.constant.ConstantDescs;
  31 import java.lang.invoke.TypeDescriptor;
  32 import java.lang.invoke.MethodHandles;
  33 import java.lang.module.ModuleReader;

  34 import java.io.IOException;
  35 import java.io.InputStream;
  36 import java.io.ObjectStreamField;
  37 import java.lang.reflect.AnnotatedElement;
  38 import java.lang.reflect.AnnotatedType;
  39 import java.lang.reflect.AccessFlag;
  40 import java.lang.reflect.Array;
  41 import java.lang.reflect.Constructor;
  42 import java.lang.reflect.Executable;
  43 import java.lang.reflect.Field;
  44 import java.lang.reflect.GenericArrayType;
  45 import java.lang.reflect.GenericDeclaration;
  46 import java.lang.reflect.InvocationTargetException;
  47 import java.lang.reflect.Member;
  48 import java.lang.reflect.Method;
  49 import java.lang.reflect.Modifier;
  50 import java.lang.reflect.Proxy;
  51 import java.lang.reflect.RecordComponent;
  52 import java.lang.reflect.Type;
  53 import java.lang.reflect.TypeVariable;
  54 import java.lang.constant.Constable;
  55 import java.net.URL;
  56 import java.security.AccessController;
  57 import java.security.PrivilegedAction;
  58 import java.util.ArrayList;
  59 import java.util.Arrays;
  60 import java.util.Collection;
  61 import java.util.HashMap;
  62 import java.util.HashSet;
  63 import java.util.LinkedHashMap;
  64 import java.util.LinkedHashSet;
  65 import java.util.List;
  66 import java.util.Map;
  67 import java.util.Objects;
  68 import java.util.Optional;
  69 import java.util.Set;
  70 import java.util.stream.Collectors;
  71 
  72 import jdk.internal.javac.PreviewFeature;
  73 import jdk.internal.loader.BootLoader;
  74 import jdk.internal.loader.BuiltinClassLoader;
  75 import jdk.internal.misc.PreviewFeatures;
  76 import jdk.internal.misc.Unsafe;
  77 import jdk.internal.module.Resources;
  78 import jdk.internal.reflect.CallerSensitive;
  79 import jdk.internal.reflect.CallerSensitiveAdapter;
  80 import jdk.internal.reflect.ConstantPool;
  81 import jdk.internal.reflect.Reflection;
  82 import jdk.internal.reflect.ReflectionFactory;
  83 import jdk.internal.vm.annotation.ForceInline;
  84 import jdk.internal.vm.annotation.IntrinsicCandidate;
  85 import jdk.internal.vm.annotation.Stable;
  86 
  87 import sun.invoke.util.Wrapper;
  88 import sun.reflect.generics.factory.CoreReflectionFactory;
  89 import sun.reflect.generics.factory.GenericsFactory;
  90 import sun.reflect.generics.repository.ClassRepository;
  91 import sun.reflect.generics.repository.MethodRepository;
  92 import sun.reflect.generics.repository.ConstructorRepository;
  93 import sun.reflect.generics.scope.ClassScope;
  94 import sun.security.util.SecurityConstants;
  95 import sun.reflect.annotation.*;
  96 import sun.reflect.misc.ReflectUtil;
  97 
  98 /**
  99  * Instances of the class {@code Class} represent classes and
 100  * interfaces in a running Java application. An enum class and a record
 101  * class are kinds of class; an annotation interface is a kind of
 102  * interface. Every array also belongs to a class that is reflected as
 103  * a {@code Class} object that is shared by all arrays with the same
 104  * element type and number of dimensions.  The primitive Java types
 105  * ({@code boolean}, {@code byte}, {@code char}, {@code short}, {@code
 106  * int}, {@code long}, {@code float}, and {@code double}), and the
 107  * keyword {@code void} are also represented as {@code Class} objects.
 108  *
 109  * <p> {@code Class} has no public constructor. Instead a {@code Class}
 110  * object is constructed automatically by the Java Virtual Machine when
 111  * a class is derived from the bytes of a {@code class} file through
 112  * the invocation of one of the following methods:
 113  * <ul>
 114  * <li> {@link ClassLoader#defineClass(String, byte[], int, int) ClassLoader::defineClass}
 115  * <li> {@link java.lang.invoke.MethodHandles.Lookup#defineClass(byte[])
 116  *      java.lang.invoke.MethodHandles.Lookup::defineClass}
 117  * <li> {@link java.lang.invoke.MethodHandles.Lookup#defineHiddenClass(byte[], boolean, MethodHandles.Lookup.ClassOption...)
 118  *      java.lang.invoke.MethodHandles.Lookup::defineHiddenClass}
 119  * </ul>
 120  *
 121  * <p> The methods of class {@code Class} expose many characteristics of a
 122  * class or interface. Most characteristics are derived from the {@code class}
 123  * file that the class loader passed to the Java Virtual Machine or
 124  * from the {@code class} file passed to {@code Lookup::defineClass}
 125  * or {@code Lookup::defineHiddenClass}.
 126  * A few characteristics are determined by the class loading environment
 127  * at run time, such as the module returned by {@link #getModule() getModule()}.
 128  *
 129  * <p> The following example uses a {@code Class} object to print the
 130  * class name of an object:
 131  *
 132  * {@snippet lang="java" :
 133  * void printClassName(Object obj) {
 134  *     System.out.println("The class of " + obj +
 135  *                        " is " + obj.getClass().getName());
 136  * }}
 137  *
 138  * It is also possible to get the {@code Class} object for a named
 139  * class or interface (or for {@code void}) using a <i>class literal</i>.
 140  * For example:
 141  *
 142  * {@snippet lang="java" :
 143  * System.out.println("The name of class Foo is: "+Foo.class.getName());
 144  * }
 145  *
 146  * <p> Some methods of class {@code Class} expose whether the declaration of
 147  * a class or interface in Java source code was <em>enclosed</em> within
 148  * another declaration. Other methods describe how a class or interface
 149  * is situated in a <em>nest</em>. A <a id="nest">nest</a> is a set of
 150  * classes and interfaces, in the same run-time package, that
 151  * allow mutual access to their {@code private} members.
 152  * The classes and interfaces are known as <em>nestmates</em>.
 153  * One nestmate acts as the
 154  * <em>nest host</em>, and enumerates the other nestmates which
 155  * belong to the nest; each of them in turn records it as the nest host.
 156  * The classes and interfaces which belong to a nest, including its host, are
 157  * determined when
 158  * {@code class} files are generated, for example, a Java compiler
 159  * will typically record a top-level class as the host of a nest where the
 160  * other members are the classes and interfaces whose declarations are
 161  * enclosed within the top-level class declaration.
 162  *
 163  * <h2><a id=hiddenClasses>Hidden Classes</a></h2>
 164  * A class or interface created by the invocation of
 165  * {@link java.lang.invoke.MethodHandles.Lookup#defineHiddenClass(byte[], boolean, MethodHandles.Lookup.ClassOption...)
 166  * Lookup::defineHiddenClass} is a {@linkplain Class#isHidden() <em>hidden</em>}
 167  * class or interface.
 168  * All kinds of class, including enum classes and record classes, may be
 169  * hidden classes; all kinds of interface, including annotation interfaces,
 170  * may be hidden interfaces.
 171  *
 172  * The {@linkplain #getName() name of a hidden class or interface} is
 173  * not a {@linkplain ClassLoader##binary-name binary name},
 174  * which means the following:
 175  * <ul>
 176  * <li>A hidden class or interface cannot be referenced by the constant pools
 177  *     of other classes and interfaces.
 178  * <li>A hidden class or interface cannot be described in
 179  *     {@linkplain java.lang.constant.ConstantDesc <em>nominal form</em>} by
 180  *     {@link #describeConstable() Class::describeConstable},
 181  *     {@link ClassDesc#of(String) ClassDesc::of}, or
 182  *     {@link ClassDesc#ofDescriptor(String) ClassDesc::ofDescriptor}.
 183  * <li>A hidden class or interface cannot be discovered by {@link #forName Class::forName}
 184  *     or {@link ClassLoader#loadClass(String, boolean) ClassLoader::loadClass}.
 185  * </ul>
 186  *
 187  * A hidden class or interface is never an array class, but may be
 188  * the element type of an array. In all other respects, the fact that
 189  * a class or interface is hidden has no bearing on the characteristics
 190  * exposed by the methods of class {@code Class}.
 191  *
 192  * <h2><a id=implicitClasses>Implicitly Declared Classes</a></h2>
 193  *
 194  * Conventionally, a Java compiler, starting from a source file for an
 195  * implicitly declared class, say {@code HelloWorld.java}, creates a
 196  * similarly-named {@code class} file, {@code HelloWorld.class}, where
 197  * the class stored in that {@code class} file is named {@code
 198  * "HelloWorld"}, matching the base names of the source and {@code
 199  * class} files.
 200  *
 201  * For the {@code Class} object of an implicitly declared class {@code
 202  * HelloWorld}, the methods to get the {@linkplain #getName name} and
 203  * {@linkplain #getTypeName type name} return results
 204  * equal to {@code "HelloWorld"}. The {@linkplain #getSimpleName
 205  * simple name} of such an implicitly declared class is {@code "HelloWorld"} and
 206  * the {@linkplain #getCanonicalName canonical name} is {@code "HelloWorld"}.
 207  *
 208  * @param <T> the type of the class modeled by this {@code Class}
 209  * object.  For example, the type of {@code String.class} is {@code
 210  * Class<String>}.  Use {@code Class<?>} if the class being modeled is
 211  * unknown.
 212  *
 213  * @see     java.lang.ClassLoader#defineClass(byte[], int, int)
 214  * @since   1.0
 215  * @jls 15.8.2 Class Literals
 216  */
 217 public final class Class<T> implements java.io.Serializable,
 218                               GenericDeclaration,
 219                               Type,
 220                               AnnotatedElement,
 221                               TypeDescriptor.OfField<Class<?>>,
 222                               Constable {
 223     private static final int ANNOTATION= 0x00002000;
 224     private static final int ENUM      = 0x00004000;
 225     private static final int SYNTHETIC = 0x00001000;
 226 
 227     private static native void registerNatives();
 228     static {
 229         registerNatives();
 230     }
 231 
 232     /*
 233      * Private constructor. Only the Java Virtual Machine creates Class objects.
 234      * This constructor is not used and prevents the default constructor being
 235      * generated.
 236      */
 237     private Class(ClassLoader loader, Class<?> arrayComponentType) {
 238         // Initialize final field for classLoader.  The initialization value of non-null
 239         // prevents future JIT optimizations from assuming this final field is null.
 240         classLoader = loader;
 241         componentType = arrayComponentType;
 242     }
 243 
 244     /**
 245      * Converts the object to a string. The string representation is the
 246      * string "class" or "interface", followed by a space, and then by the
 247      * name of the class in the format returned by {@code getName}.
 248      * If this {@code Class} object represents a primitive type,
 249      * this method returns the name of the primitive type.  If
 250      * this {@code Class} object represents void this method returns
 251      * "void". If this {@code Class} object represents an array type,
 252      * this method returns "class " followed by {@code getName}.
 253      *
 254      * @return a string representation of this {@code Class} object.
 255      */
 256     public String toString() {
 257         String kind = isInterface() ? "interface " : isPrimitive() ? "" : "class ";
 258         return kind.concat(getName());
 259     }
 260 
 261     /**
 262      * Returns a string describing this {@code Class}, including
 263      * information about modifiers, {@link #isSealed() sealed}/{@code
 264      * non-sealed} status, and type parameters.
 265      *
 266      * The string is formatted as a list of type modifiers, if any,
 267      * followed by the kind of type (empty string for primitive types
 268      * and {@code class}, {@code enum}, {@code interface},
 269      * {@code @interface}, or {@code record} as appropriate), followed
 270      * by the type's name, followed by an angle-bracketed
 271      * comma-separated list of the type's type parameters, if any,
 272      * including informative bounds on the type parameters, if any.
 273      *
 274      * A space is used to separate modifiers from one another and to
 275      * separate any modifiers from the kind of type. The modifiers
 276      * occur in canonical order. If there are no type parameters, the
 277      * type parameter list is elided.
 278      *
 279      * For an array type, the string starts with the type name,
 280      * followed by an angle-bracketed comma-separated list of the
 281      * type's type parameters, if any, followed by a sequence of
 282      * {@code []} characters, one set of brackets per dimension of
 283      * the array.
 284      *
 285      * <p>Note that since information about the runtime representation
 286      * of a type is being generated, modifiers not present on the
 287      * originating source code or illegal on the originating source
 288      * code may be present.
 289      *
 290      * @return a string describing this {@code Class}, including
 291      * information about modifiers and type parameters
 292      *
 293      * @since 1.8
 294      */
 295     public String toGenericString() {
 296         if (isPrimitive()) {
 297             return toString();
 298         } else {
 299             StringBuilder sb = new StringBuilder();
 300             Class<?> component = this;
 301             int arrayDepth = 0;
 302 
 303             if (isArray()) {
 304                 do {
 305                     arrayDepth++;
 306                     component = component.getComponentType();
 307                 } while (component.isArray());
 308                 sb.append(component.getName());
 309             } else {
 310                 // Class modifiers are a superset of interface modifiers
 311                 int modifiers = getModifiers() & Modifier.classModifiers();
 312                 if (modifiers != 0) {
 313                     sb.append(Modifier.toString(modifiers));
 314                     sb.append(' ');
 315                 }
 316 
 317                 // A class cannot be strictfp and sealed/non-sealed so
 318                 // it is sufficient to check for sealed-ness after all
 319                 // modifiers are printed.
 320                 addSealingInfo(modifiers, sb);
 321 
 322                 if (isAnnotation()) {
 323                     sb.append('@');
 324                 }
 325                 if (isInterface()) { // Note: all annotation interfaces are interfaces
 326                     sb.append("interface");
 327                 } else {
 328                     if (isEnum())
 329                         sb.append("enum");
 330                     else if (isRecord())
 331                         sb.append("record");
 332                     else
 333                         sb.append("class");
 334                 }
 335                 sb.append(' ');
 336                 sb.append(getName());
 337             }
 338 
 339             TypeVariable<?>[] typeparms = component.getTypeParameters();
 340             if (typeparms.length > 0) {
 341                 sb.append(Arrays.stream(typeparms)
 342                           .map(Class::typeVarBounds)
 343                           .collect(Collectors.joining(",", "<", ">")));
 344             }
 345 
 346             if (arrayDepth > 0) sb.append("[]".repeat(arrayDepth));
 347 
 348             return sb.toString();
 349         }
 350     }
 351 
 352     private void addSealingInfo(int modifiers, StringBuilder sb) {
 353         // A class can be final XOR sealed XOR non-sealed.
 354         if (Modifier.isFinal(modifiers)) {
 355             return; // no-op
 356         } else {
 357             if (isSealed()) {
 358                 sb.append("sealed ");
 359                 return;
 360             } else {
 361                 // Check for sealed ancestor, which implies this class
 362                 // is non-sealed.
 363                 if (hasSealedAncestor(this)) {
 364                     sb.append("non-sealed ");
 365                 }
 366             }
 367         }
 368     }
 369 
 370     private boolean hasSealedAncestor(Class<?> clazz) {
 371         // From JLS 8.1.1.2:
 372         // "It is a compile-time error if a class has a sealed direct
 373         // superclass or a sealed direct superinterface, and is not
 374         // declared final, sealed, or non-sealed either explicitly or
 375         // implicitly.
 376         // Thus, an effect of the sealed keyword is to force all
 377         // direct subclasses to explicitly declare whether they are
 378         // final, sealed, or non-sealed. This avoids accidentally
 379         // exposing a sealed class hierarchy to unwanted subclassing."
 380 
 381         // Therefore, will just check direct superclass and
 382         // superinterfaces.
 383         var superclass = clazz.getSuperclass();
 384         if (superclass != null && superclass.isSealed()) {
 385             return true;
 386         }
 387         for (var superinterface : clazz.getInterfaces()) {
 388             if (superinterface.isSealed()) {
 389                 return true;
 390             }
 391         }
 392         return false;
 393     }
 394 
 395     static String typeVarBounds(TypeVariable<?> typeVar) {
 396         Type[] bounds = typeVar.getBounds();
 397         if (bounds.length == 1 && bounds[0].equals(Object.class)) {
 398             return typeVar.getName();
 399         } else {
 400             return typeVar.getName() + " extends " +
 401                 Arrays.stream(bounds)
 402                 .map(Type::getTypeName)
 403                 .collect(Collectors.joining(" & "));
 404         }
 405     }
 406 
 407     /**
 408      * Returns the {@code Class} object associated with the class or
 409      * interface with the given string name.  Invoking this method is
 410      * equivalent to:
 411      *
 412      * {@snippet lang="java" :
 413      * Class.forName(className, true, currentLoader)
 414      * }
 415      *
 416      * where {@code currentLoader} denotes the defining class loader of
 417      * the current class.
 418      *
 419      * <p> For example, the following code fragment returns the
 420      * runtime {@code Class} object for the class named
 421      * {@code java.lang.Thread}:
 422      *
 423      * {@snippet lang="java" :
 424      * Class<?> t = Class.forName("java.lang.Thread");
 425      * }
 426      * <p>
 427      * A call to {@code forName("X")} causes the class named
 428      * {@code X} to be initialized.
 429      *
 430      * <p>
 431      * In cases where this method is called from a context where there is no
 432      * caller frame on the stack (e.g. when called directly from a JNI
 433      * attached thread), the system class loader is used.
 434      *
 435      * @param     className the {@linkplain ClassLoader##binary-name binary name}
 436      *                      of the class or the string representing an array type
 437      * @return    the {@code Class} object for the class with the
 438      *            specified name.
 439      * @throws    LinkageError if the linkage fails
 440      * @throws    ExceptionInInitializerError if the initialization provoked
 441      *            by this method fails
 442      * @throws    ClassNotFoundException if the class cannot be located
 443      *
 444      * @jls 12.2 Loading of Classes and Interfaces
 445      * @jls 12.3 Linking of Classes and Interfaces
 446      * @jls 12.4 Initialization of Classes and Interfaces
 447      */
 448     @CallerSensitive
 449     public static Class<?> forName(String className)
 450                 throws ClassNotFoundException {
 451         Class<?> caller = Reflection.getCallerClass();
 452         return forName(className, caller);
 453     }
 454 
 455     // Caller-sensitive adapter method for reflective invocation
 456     @CallerSensitiveAdapter
 457     private static Class<?> forName(String className, Class<?> caller)
 458             throws ClassNotFoundException {
 459         ClassLoader loader = (caller == null) ? ClassLoader.getSystemClassLoader()
 460                                               : ClassLoader.getClassLoader(caller);
 461         if (loader instanceof BuiltinClassLoader bcl) {
 462             if (bcl.usePositiveCache) {
 463                 Class<?> result = bcl.checkPositiveLookupCache(className);
 464                 if (result != null) {
 465                     return result;
 466                 }
 467             }
 468             if (bcl.useNegativeCache && bcl.checkNegativeLookupCache(className)) {
 469                 throw new ClassNotFoundException(className);
 470             }
 471         }
 472         return forName0(className, true, loader, caller);
 473     }
 474 
 475     /**
 476      * Returns the {@code Class} object associated with the class or
 477      * interface with the given string name, using the given class loader.
 478      * Given the {@linkplain ClassLoader##binary-name binary name} for a class or interface,
 479      * this method attempts to locate and load the class or interface. The specified
 480      * class loader is used to load the class or interface.  If the parameter
 481      * {@code loader} is {@code null}, the class is loaded through the bootstrap
 482      * class loader.  The class is initialized only if the
 483      * {@code initialize} parameter is {@code true} and if it has
 484      * not been initialized earlier.
 485      *
 486      * <p> This method cannot be used to obtain any of the {@code Class} objects
 487      * representing primitive types or void, hidden classes or interfaces,
 488      * or array classes whose element type is a hidden class or interface.
 489      * If {@code name} denotes a primitive type or void, for example {@code I},
 490      * an attempt will be made to locate a user-defined class in the unnamed package
 491      * whose name is {@code I} instead.
 492      * To obtain a {@code Class} object for a named primitive type
 493      * such as {@code int} or {@code long} use {@link
 494      * #forPrimitiveName(String)}.
 495      *
 496      * <p> To obtain the {@code Class} object associated with an array class,
 497      * the name consists of one or more {@code '['} representing the depth
 498      * of the array nesting, followed by the element type as encoded in
 499      * {@linkplain ##nameFormat the table} specified in {@code Class.getName()}.
 500      *
 501      * <p> Examples:
 502      * {@snippet lang="java" :
 503      * Class<?> threadClass = Class.forName("java.lang.Thread", false, currentLoader);
 504      * Class<?> stringArrayClass = Class.forName("[Ljava.lang.String;", false, currentLoader);
 505      * Class<?> intArrayClass = Class.forName("[[[I", false, currentLoader);   // Class of int[][][]
 506      * Class<?> nestedClass = Class.forName("java.lang.Character$UnicodeBlock", false, currentLoader);
 507      * Class<?> fooClass = Class.forName("Foo", true, currentLoader);
 508      * }
 509      *
 510      * <p> A call to {@code getName()} on the {@code Class} object returned
 511      * from {@code forName(}<i>N</i>{@code )} returns <i>N</i>.
 512      *
 513      * <p> A call to {@code forName("[L}<i>N</i>{@code ;")} causes the element type
 514      * named <i>N</i> to be loaded but not initialized regardless of the value
 515      * of the {@code initialize} parameter.
 516      *
 517      * @apiNote
 518      * This method throws errors related to loading, linking or initializing
 519      * as specified in Sections {@jls 12.2}, {@jls 12.3}, and {@jls 12.4} of
 520      * <cite>The Java Language Specification</cite>.
 521      * In addition, this method does not check whether the requested class
 522      * is accessible to its caller.
 523      *
 524      * @param name       the {@linkplain ClassLoader##binary-name binary name}
 525      *                   of the class or the string representing an array class
 526      *
 527      * @param initialize if {@code true} the class will be initialized
 528      *                   (which implies linking). See Section {@jls
 529      *                   12.4} of <cite>The Java Language
 530      *                   Specification</cite>.
 531      * @param loader     class loader from which the class must be loaded
 532      * @return           class object representing the desired class
 533      *
 534      * @throws    LinkageError if the linkage fails
 535      * @throws    ExceptionInInitializerError if the initialization provoked
 536      *            by this method fails
 537      * @throws    ClassNotFoundException if the class cannot be located by
 538      *            the specified class loader
 539      * @throws    SecurityException
 540      *            if a security manager is present, and the {@code loader} is
 541      *            {@code null}, and the caller's class loader is not
 542      *            {@code null}, and the caller does not have the
 543      *            {@link RuntimePermission}{@code ("getClassLoader")}
 544      *
 545      * @see       java.lang.Class#forName(String)
 546      * @see       java.lang.ClassLoader
 547      *
 548      * @jls 12.2 Loading of Classes and Interfaces
 549      * @jls 12.3 Linking of Classes and Interfaces
 550      * @jls 12.4 Initialization of Classes and Interfaces
 551      * @jls 13.1 The Form of a Binary
 552      * @since     1.2
 553      */
 554     @CallerSensitive
 555     public static Class<?> forName(String name, boolean initialize,
 556                                    ClassLoader loader)
 557         throws ClassNotFoundException
 558     {
 559         Class<?> caller = null;
 560         @SuppressWarnings("removal")
 561         SecurityManager sm = System.getSecurityManager();
 562         if (sm != null) {
 563             // Reflective call to get caller class is only needed if a security manager
 564             // is present.  Avoid the overhead of making this call otherwise.
 565             caller = Reflection.getCallerClass();
 566         }
 567         return forName(name, initialize, loader, caller);
 568     }
 569 
 570     // Caller-sensitive adapter method for reflective invocation
 571     @CallerSensitiveAdapter
 572     private static Class<?> forName(String name, boolean initialize, ClassLoader loader, Class<?> caller)
 573             throws ClassNotFoundException
 574     {
 575         @SuppressWarnings("removal")
 576         SecurityManager sm = System.getSecurityManager();
 577         if (sm != null) {
 578             // Reflective call to get caller class is only needed if a security manager
 579             // is present.  Avoid the overhead of making this call otherwise.
 580             if (loader == null) {
 581                 ClassLoader ccl = ClassLoader.getClassLoader(caller);
 582                 if (ccl != null) {
 583                     sm.checkPermission(
 584                             SecurityConstants.GET_CLASSLOADER_PERMISSION);
 585                 }
 586             }
 587         }
 588         if (loader instanceof BuiltinClassLoader bcl) {
 589             if (bcl.usePositiveCache) {
 590                 Class<?> result = bcl.checkPositiveLookupCache(name);
 591                 if (result != null) {
 592                     return result;
 593                 }
 594             }
 595            if (bcl.useNegativeCache && bcl.checkNegativeLookupCache(name)) {
 596                 throw new ClassNotFoundException(name);
 597             }
 598         }
 599         return forName0(name, initialize, loader, caller);
 600     }
 601 
 602     /** Called after security check for system loader access checks have been made. */
 603     private static native Class<?> forName0(String name, boolean initialize,
 604                                             ClassLoader loader,
 605                                             Class<?> caller)
 606         throws ClassNotFoundException;
 607 
 608 
 609     /**
 610      * Returns the {@code Class} with the given {@linkplain ClassLoader##binary-name
 611      * binary name} in the given module.
 612      *
 613      * <p> This method attempts to locate and load the class or interface.
 614      * It does not link the class, and does not run the class initializer.
 615      * If the class is not found, this method returns {@code null}. </p>
 616      *
 617      * <p> If the class loader of the given module defines other modules and
 618      * the given name is a class defined in a different module, this method
 619      * returns {@code null} after the class is loaded. </p>
 620      *
 621      * <p> This method does not check whether the requested class is
 622      * accessible to its caller. </p>
 623      *
 624      * @apiNote
 625      * This method does not support loading of array types, unlike
 626      * {@link #forName(String, boolean, ClassLoader)}. The class name must be
 627      * a binary name.  This method returns {@code null} on failure rather than
 628      * throwing a {@link ClassNotFoundException}, as is done by
 629      * the {@link #forName(String, boolean, ClassLoader)} method.
 630      * The security check is a stack-based permission check if the caller
 631      * loads a class in another module.
 632      *
 633      * @param  module   A module
 634      * @param  name     The {@linkplain ClassLoader##binary-name binary name}
 635      *                  of the class
 636      * @return {@code Class} object of the given name defined in the given module;
 637      *         {@code null} if not found.
 638      *
 639      * @throws NullPointerException if the given module or name is {@code null}
 640      *
 641      * @throws LinkageError if the linkage fails
 642      *
 643      * @throws SecurityException
 644      *         <ul>
 645      *         <li> if the caller is not the specified module and
 646      *         {@code RuntimePermission("getClassLoader")} permission is denied; or</li>
 647      *         <li> access to the module content is denied. For example,
 648      *         permission check will be performed when a class loader calls
 649      *         {@link ModuleReader#open(String)} to read the bytes of a class file
 650      *         in a module.</li>
 651      *         </ul>
 652      *
 653      * @jls 12.2 Loading of Classes and Interfaces
 654      * @jls 12.3 Linking of Classes and Interfaces
 655      * @since 9
 656      */
 657     @SuppressWarnings("removal")
 658     @CallerSensitive
 659     public static Class<?> forName(Module module, String name) {
 660         Class<?> caller = null;
 661         SecurityManager sm = System.getSecurityManager();
 662         if (sm != null) {
 663             caller = Reflection.getCallerClass();
 664         }
 665         return forName(module, name, caller);
 666     }
 667 
 668     // Caller-sensitive adapter method for reflective invocation
 669     @SuppressWarnings("removal")
 670     @CallerSensitiveAdapter
 671     private static Class<?> forName(Module module, String name, Class<?> caller) {
 672         Objects.requireNonNull(module);
 673         Objects.requireNonNull(name);
 674 
 675         ClassLoader cl;
 676         SecurityManager sm = System.getSecurityManager();
 677         if (sm != null) {
 678             if (caller != null && caller.getModule() != module) {
 679                 // if caller is null, Class.forName is the last java frame on the stack.
 680                 // java.base has all permissions
 681                 sm.checkPermission(SecurityConstants.GET_CLASSLOADER_PERMISSION);
 682             }
 683             PrivilegedAction<ClassLoader> pa = module::getClassLoader;
 684             cl = AccessController.doPrivileged(pa);
 685         } else {
 686             cl = module.getClassLoader();
 687         }
 688 
 689         if (cl != null) {
 690             return cl.loadClass(module, name);
 691         } else {
 692             return BootLoader.loadClass(module, name);
 693         }
 694     }
 695 
 696     /**
 697      * {@return the {@code Class} object associated with the
 698      * {@linkplain #isPrimitive() primitive type} of the given name}
 699      * If the argument is not the name of a primitive type, {@code
 700      * null} is returned.
 701      *
 702      * @param primitiveName the name of the primitive type to find
 703      *
 704      * @throws NullPointerException if the argument is {@code null}
 705      *
 706      * @jls 4.2 Primitive Types and Values
 707      * @jls 15.8.2 Class Literals
 708      * @since 22
 709      */
 710     public static Class<?> forPrimitiveName(String primitiveName) {
 711         return switch(primitiveName) {
 712         // Integral types
 713         case "int"     -> int.class;
 714         case "long"    -> long.class;
 715         case "short"   -> short.class;
 716         case "char"    -> char.class;
 717         case "byte"    -> byte.class;
 718 
 719         // Floating-point types
 720         case "float"   -> float.class;
 721         case "double"  -> double.class;
 722 
 723         // Other types
 724         case "boolean" -> boolean.class;
 725         case "void"    -> void.class;
 726 
 727         default        -> null;
 728         };
 729     }
 730 
 731     /**
 732      * Creates a new instance of the class represented by this {@code Class}
 733      * object.  The class is instantiated as if by a {@code new}
 734      * expression with an empty argument list.  The class is initialized if it
 735      * has not already been initialized.
 736      *
 737      * @deprecated This method propagates any exception thrown by the
 738      * nullary constructor, including a checked exception.  Use of
 739      * this method effectively bypasses the compile-time exception
 740      * checking that would otherwise be performed by the compiler.
 741      * The {@link
 742      * java.lang.reflect.Constructor#newInstance(java.lang.Object...)
 743      * Constructor.newInstance} method avoids this problem by wrapping
 744      * any exception thrown by the constructor in a (checked) {@link
 745      * java.lang.reflect.InvocationTargetException}.
 746      *
 747      * <p>The call
 748      *
 749      * {@snippet lang="java" :
 750      * clazz.newInstance()
 751      * }
 752      *
 753      * can be replaced by
 754      *
 755      * {@snippet lang="java" :
 756      * clazz.getDeclaredConstructor().newInstance()
 757      * }
 758      *
 759      * The latter sequence of calls is inferred to be able to throw
 760      * the additional exception types {@link
 761      * InvocationTargetException} and {@link
 762      * NoSuchMethodException}. Both of these exception types are
 763      * subclasses of {@link ReflectiveOperationException}.
 764      *
 765      * @return  a newly allocated instance of the class represented by this
 766      *          object.
 767      * @throws  IllegalAccessException  if the class or its nullary
 768      *          constructor is not accessible.
 769      * @throws  InstantiationException
 770      *          if this {@code Class} represents an abstract class,
 771      *          an interface, an array class, a primitive type, or void;
 772      *          or if the class has no nullary constructor;
 773      *          or if the instantiation fails for some other reason.
 774      * @throws  ExceptionInInitializerError if the initialization
 775      *          provoked by this method fails.
 776      * @throws  SecurityException
 777      *          If a security manager, <i>s</i>, is present and
 778      *          the caller's class loader is not the same as or an
 779      *          ancestor of the class loader for the current class and
 780      *          invocation of {@link SecurityManager#checkPackageAccess
 781      *          s.checkPackageAccess()} denies access to the package
 782      *          of this class.
 783      */
 784     @SuppressWarnings("removal")
 785     @CallerSensitive
 786     @Deprecated(since="9")
 787     public T newInstance()
 788         throws InstantiationException, IllegalAccessException
 789     {
 790         SecurityManager sm = System.getSecurityManager();
 791         if (sm != null) {
 792             checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), false);
 793         }
 794 
 795         // Constructor lookup
 796         Constructor<T> tmpConstructor = cachedConstructor;
 797         if (tmpConstructor == null) {
 798             if (this == Class.class) {
 799                 throw new IllegalAccessException(
 800                     "Can not call newInstance() on the Class for java.lang.Class"
 801                 );
 802             }
 803             try {
 804                 Class<?>[] empty = {};
 805                 final Constructor<T> c = getReflectionFactory().copyConstructor(
 806                     getConstructor0(empty, Member.DECLARED));
 807                 // Disable accessibility checks on the constructor
 808                 // access check is done with the true caller
 809                 java.security.AccessController.doPrivileged(
 810                     new java.security.PrivilegedAction<>() {
 811                         public Void run() {
 812                                 c.setAccessible(true);
 813                                 return null;
 814                             }
 815                         });
 816                 cachedConstructor = tmpConstructor = c;
 817             } catch (NoSuchMethodException e) {
 818                 throw (InstantiationException)
 819                     new InstantiationException(getName()).initCause(e);
 820             }
 821         }
 822 
 823         try {
 824             Class<?> caller = Reflection.getCallerClass();
 825             return getReflectionFactory().newInstance(tmpConstructor, null, caller);
 826         } catch (InvocationTargetException e) {
 827             Unsafe.getUnsafe().throwException(e.getTargetException());
 828             // Not reached
 829             return null;
 830         }
 831     }
 832 
 833     private transient volatile Constructor<T> cachedConstructor;
 834 
 835     /**
 836      * Determines if the specified {@code Object} is assignment-compatible
 837      * with the object represented by this {@code Class}.  This method is
 838      * the dynamic equivalent of the Java language {@code instanceof}
 839      * operator. The method returns {@code true} if the specified
 840      * {@code Object} argument is non-null and can be cast to the
 841      * reference type represented by this {@code Class} object without
 842      * raising a {@code ClassCastException.} It returns {@code false}
 843      * otherwise.
 844      *
 845      * <p> Specifically, if this {@code Class} object represents a
 846      * declared class, this method returns {@code true} if the specified
 847      * {@code Object} argument is an instance of the represented class (or
 848      * of any of its subclasses); it returns {@code false} otherwise. If
 849      * this {@code Class} object represents an array class, this method
 850      * returns {@code true} if the specified {@code Object} argument
 851      * can be converted to an object of the array class by an identity
 852      * conversion or by a widening reference conversion; it returns
 853      * {@code false} otherwise. If this {@code Class} object
 854      * represents an interface, this method returns {@code true} if the
 855      * class or any superclass of the specified {@code Object} argument
 856      * implements this interface; it returns {@code false} otherwise. If
 857      * this {@code Class} object represents a primitive type, this method
 858      * returns {@code false}.
 859      *
 860      * @param   obj the object to check
 861      * @return  true if {@code obj} is an instance of this class
 862      *
 863      * @since 1.1
 864      */
 865     @IntrinsicCandidate
 866     public native boolean isInstance(Object obj);
 867 
 868 
 869     /**
 870      * Determines if the class or interface represented by this
 871      * {@code Class} object is either the same as, or is a superclass or
 872      * superinterface of, the class or interface represented by the specified
 873      * {@code Class} parameter. It returns {@code true} if so;
 874      * otherwise it returns {@code false}. If this {@code Class}
 875      * object represents a primitive type, this method returns
 876      * {@code true} if the specified {@code Class} parameter is
 877      * exactly this {@code Class} object; otherwise it returns
 878      * {@code false}.
 879      *
 880      * <p> Specifically, this method tests whether the type represented by the
 881      * specified {@code Class} parameter can be converted to the type
 882      * represented by this {@code Class} object via an identity conversion
 883      * or via a widening reference conversion. See <cite>The Java Language
 884      * Specification</cite>, sections {@jls 5.1.1} and {@jls 5.1.4},
 885      * for details.
 886      *
 887      * @param     cls the {@code Class} object to be checked
 888      * @return    the {@code boolean} value indicating whether objects of the
 889      *            type {@code cls} can be assigned to objects of this class
 890      * @throws    NullPointerException if the specified Class parameter is
 891      *            null.
 892      * @since     1.1
 893      */
 894     @IntrinsicCandidate
 895     public native boolean isAssignableFrom(Class<?> cls);
 896 
 897 
 898     /**
 899      * Determines if this {@code Class} object represents an
 900      * interface type.
 901      *
 902      * @return  {@code true} if this {@code Class} object represents an interface;
 903      *          {@code false} otherwise.
 904      */
 905     @IntrinsicCandidate
 906     public native boolean isInterface();
 907 
 908 
 909     /**
 910      * Determines if this {@code Class} object represents an array class.
 911      *
 912      * @return  {@code true} if this {@code Class} object represents an array class;
 913      *          {@code false} otherwise.
 914      * @since   1.1
 915      */
 916     @IntrinsicCandidate
 917     public native boolean isArray();
 918 
 919 
 920     /**
 921      * Determines if this {@code Class} object represents a primitive
 922      * type or void.
 923      *
 924      * <p> There are nine predefined {@code Class} objects to
 925      * represent the eight primitive types and void.  These are
 926      * created by the Java Virtual Machine, and have the same
 927      * {@linkplain #getName() names} as the primitive types that they
 928      * represent, namely {@code boolean}, {@code byte}, {@code char},
 929      * {@code short}, {@code int}, {@code long}, {@code float}, and
 930      * {@code double}.
 931      *
 932      * <p>No other class objects are considered primitive.
 933      *
 934      * @apiNote
 935      * A {@code Class} object represented by a primitive type can be
 936      * accessed via the {@code TYPE} public static final variables
 937      * defined in the primitive wrapper classes such as {@link
 938      * java.lang.Integer#TYPE Integer.TYPE}. In the Java programming
 939      * language, the objects may be referred to by a class literal
 940      * expression such as {@code int.class}.  The {@code Class} object
 941      * for void can be expressed as {@code void.class} or {@link
 942      * java.lang.Void#TYPE Void.TYPE}.
 943      *
 944      * @return true if and only if this class represents a primitive type
 945      *
 946      * @see     java.lang.Boolean#TYPE
 947      * @see     java.lang.Character#TYPE
 948      * @see     java.lang.Byte#TYPE
 949      * @see     java.lang.Short#TYPE
 950      * @see     java.lang.Integer#TYPE
 951      * @see     java.lang.Long#TYPE
 952      * @see     java.lang.Float#TYPE
 953      * @see     java.lang.Double#TYPE
 954      * @see     java.lang.Void#TYPE
 955      * @since 1.1
 956      * @jls 15.8.2 Class Literals
 957      */
 958     @IntrinsicCandidate
 959     public native boolean isPrimitive();
 960 
 961     /**
 962      * Returns true if this {@code Class} object represents an annotation
 963      * interface.  Note that if this method returns true, {@link #isInterface()}
 964      * would also return true, as all annotation interfaces are also interfaces.
 965      *
 966      * @return {@code true} if this {@code Class} object represents an annotation
 967      *      interface; {@code false} otherwise
 968      * @since 1.5
 969      */
 970     public boolean isAnnotation() {
 971         return (getModifiers() & ANNOTATION) != 0;
 972     }
 973 
 974     /**
 975      *{@return {@code true} if and only if this class has the synthetic modifier
 976      * bit set}
 977      *
 978      * @jls 13.1 The Form of a Binary
 979      * @jvms 4.1 The {@code ClassFile} Structure
 980      * @see <a
 981      * href="{@docRoot}/java.base/java/lang/reflect/package-summary.html#LanguageJvmModel">Java
 982      * programming language and JVM modeling in core reflection</a>
 983      * @since 1.5
 984      */
 985     public boolean isSynthetic() {
 986         return (getModifiers() & SYNTHETIC) != 0;
 987     }
 988 
 989     /**
 990      * Returns the  name of the entity (class, interface, array class,
 991      * primitive type, or void) represented by this {@code Class} object.
 992      *
 993      * <p> If this {@code Class} object represents a class or interface,
 994      * not an array class, then:
 995      * <ul>
 996      * <li> If the class or interface is not {@linkplain #isHidden() hidden},
 997      *      then the {@linkplain ClassLoader##binary-name binary name}
 998      *      of the class or interface is returned.
 999      * <li> If the class or interface is hidden, then the result is a string
1000      *      of the form: {@code N + '/' + <suffix>}
1001      *      where {@code N} is the {@linkplain ClassLoader##binary-name binary name}
1002      *      indicated by the {@code class} file passed to
1003      *      {@link java.lang.invoke.MethodHandles.Lookup#defineHiddenClass(byte[], boolean, MethodHandles.Lookup.ClassOption...)
1004      *      Lookup::defineHiddenClass}, and {@code <suffix>} is an unqualified name.
1005      * </ul>
1006      *
1007      * <p> If this {@code Class} object represents an array class, then
1008      * the result is a string consisting of one or more '{@code [}' characters
1009      * representing the depth of the array nesting, followed by the element
1010      * type as encoded using the following table:
1011      *
1012      * <blockquote><table class="striped" id="nameFormat">
1013      * <caption style="display:none">Element types and encodings</caption>
1014      * <thead>
1015      * <tr><th scope="col"> Element Type <th scope="col"> Encoding
1016      * </thead>
1017      * <tbody style="text-align:left">
1018      * <tr><th scope="row"> {@code boolean} <td style="text-align:center"> {@code Z}
1019      * <tr><th scope="row"> {@code byte}    <td style="text-align:center"> {@code B}
1020      * <tr><th scope="row"> {@code char}    <td style="text-align:center"> {@code C}
1021      * <tr><th scope="row"> class or interface with {@linkplain ClassLoader##binary-name binary name} <i>N</i>
1022      *                                      <td style="text-align:center"> {@code L}<em>N</em>{@code ;}
1023      * <tr><th scope="row"> {@code double}  <td style="text-align:center"> {@code D}
1024      * <tr><th scope="row"> {@code float}   <td style="text-align:center"> {@code F}
1025      * <tr><th scope="row"> {@code int}     <td style="text-align:center"> {@code I}
1026      * <tr><th scope="row"> {@code long}    <td style="text-align:center"> {@code J}
1027      * <tr><th scope="row"> {@code short}   <td style="text-align:center"> {@code S}
1028      * </tbody>
1029      * </table></blockquote>
1030      *
1031      * <p> If this {@code Class} object represents a primitive type or {@code void},
1032      * then the result is a string with the same spelling as the Java language
1033      * keyword which corresponds to the primitive type or {@code void}.
1034      *
1035      * <p> Examples:
1036      * <blockquote><pre>
1037      * String.class.getName()
1038      *     returns "java.lang.String"
1039      * Character.UnicodeBlock.class.getName()
1040      *     returns "java.lang.Character$UnicodeBlock"
1041      * byte.class.getName()
1042      *     returns "byte"
1043      * (new Object[3]).getClass().getName()
1044      *     returns "[Ljava.lang.Object;"
1045      * (new int[3][4][5][6][7][8][9]).getClass().getName()
1046      *     returns "[[[[[[[I"
1047      * </pre></blockquote>
1048      *
1049      * @apiNote
1050      * Distinct class objects can have the same name but different class loaders.
1051      *
1052      * @return  the name of the class, interface, or other entity
1053      *          represented by this {@code Class} object.
1054      * @jls 13.1 The Form of a Binary
1055      */
1056     public String getName() {
1057         String name = this.name;
1058         return name != null ? name : initClassName();
1059     }
1060 
1061     // Cache the name to reduce the number of calls into the VM.
1062     // This field would be set by VM itself during initClassName call.
1063     private transient String name;
1064     private native String initClassName();
1065 
1066     /**
1067      * Returns the class loader for the class.  Some implementations may use
1068      * null to represent the bootstrap class loader. This method will return
1069      * null in such implementations if this class was loaded by the bootstrap
1070      * class loader.
1071      *
1072      * <p>If this {@code Class} object
1073      * represents a primitive type or void, null is returned.
1074      *
1075      * @return  the class loader that loaded the class or interface
1076      *          represented by this {@code Class} object.
1077      * @throws  SecurityException
1078      *          if a security manager is present, and the caller's class loader
1079      *          is not {@code null} and is not the same as or an ancestor of the
1080      *          class loader for the class whose class loader is requested,
1081      *          and the caller does not have the
1082      *          {@link RuntimePermission}{@code ("getClassLoader")}
1083      * @see java.lang.ClassLoader
1084      * @see SecurityManager#checkPermission
1085      * @see java.lang.RuntimePermission
1086      */
1087     @CallerSensitive
1088     @ForceInline // to ensure Reflection.getCallerClass optimization
1089     public ClassLoader getClassLoader() {
1090         ClassLoader cl = classLoader;
1091         if (cl == null)
1092             return null;
1093         @SuppressWarnings("removal")
1094         SecurityManager sm = System.getSecurityManager();
1095         if (sm != null) {
1096             ClassLoader.checkClassLoaderPermission(cl, Reflection.getCallerClass());
1097         }
1098         return cl;
1099     }
1100 
1101     // Package-private to allow ClassLoader access
1102     ClassLoader getClassLoader0() { return classLoader; }
1103 
1104     /**
1105      * Returns the module that this class or interface is a member of.
1106      *
1107      * If this class represents an array type then this method returns the
1108      * {@code Module} for the element type. If this class represents a
1109      * primitive type or void, then the {@code Module} object for the
1110      * {@code java.base} module is returned.
1111      *
1112      * If this class is in an unnamed module then the {@linkplain
1113      * ClassLoader#getUnnamedModule() unnamed} {@code Module} of the class
1114      * loader for this class is returned.
1115      *
1116      * @return the module that this class or interface is a member of
1117      *
1118      * @since 9
1119      */
1120     public Module getModule() {
1121         return module;
1122     }
1123 
1124     // set by VM
1125     @Stable
1126     private transient Module module;
1127 
1128     // Initialized in JVM not by private constructor
1129     // This field is filtered from reflection access, i.e. getDeclaredField
1130     // will throw NoSuchFieldException
1131     private final ClassLoader classLoader;
1132 
1133     // Set by VM
1134     private transient Object classData;
1135 
1136     // package-private
1137     Object getClassData() {
1138         return classData;
1139     }
1140 
1141     /**
1142      * Returns an array of {@code TypeVariable} objects that represent the
1143      * type variables declared by the generic declaration represented by this
1144      * {@code GenericDeclaration} object, in declaration order.  Returns an
1145      * array of length 0 if the underlying generic declaration declares no type
1146      * variables.
1147      *
1148      * @return an array of {@code TypeVariable} objects that represent
1149      *     the type variables declared by this generic declaration
1150      * @throws java.lang.reflect.GenericSignatureFormatError if the generic
1151      *     signature of this generic declaration does not conform to
1152      *     the format specified in section {@jvms 4.7.9} of
1153      *     <cite>The Java Virtual Machine Specification</cite>
1154      * @since 1.5
1155      */
1156     @SuppressWarnings("unchecked")
1157     public TypeVariable<Class<T>>[] getTypeParameters() {
1158         ClassRepository info = getGenericInfo();
1159         if (info != null)
1160             return (TypeVariable<Class<T>>[])info.getTypeParameters();
1161         else
1162             return (TypeVariable<Class<T>>[])new TypeVariable<?>[0];
1163     }
1164 
1165 
1166     /**
1167      * Returns the {@code Class} representing the direct superclass of the
1168      * entity (class, interface, primitive type or void) represented by
1169      * this {@code Class}.  If this {@code Class} represents either the
1170      * {@code Object} class, an interface, a primitive type, or void, then
1171      * null is returned.  If this {@code Class} object represents an array class
1172      * then the {@code Class} object representing the {@code Object} class is
1173      * returned.
1174      *
1175      * @return the direct superclass of the class represented by this {@code Class} object
1176      */
1177     @IntrinsicCandidate
1178     public native Class<? super T> getSuperclass();
1179 
1180 
1181     /**
1182      * Returns the {@code Type} representing the direct superclass of
1183      * the entity (class, interface, primitive type or void) represented by
1184      * this {@code Class} object.
1185      *
1186      * <p>If the superclass is a parameterized type, the {@code Type}
1187      * object returned must accurately reflect the actual type
1188      * arguments used in the source code. The parameterized type
1189      * representing the superclass is created if it had not been
1190      * created before. See the declaration of {@link
1191      * java.lang.reflect.ParameterizedType ParameterizedType} for the
1192      * semantics of the creation process for parameterized types.  If
1193      * this {@code Class} object represents either the {@code Object}
1194      * class, an interface, a primitive type, or void, then null is
1195      * returned.  If this {@code Class} object represents an array class
1196      * then the {@code Class} object representing the {@code Object} class is
1197      * returned.
1198      *
1199      * @throws java.lang.reflect.GenericSignatureFormatError if the generic
1200      *     class signature does not conform to the format specified in
1201      *     section {@jvms 4.7.9} of <cite>The Java Virtual
1202      *     Machine Specification</cite>
1203      * @throws TypeNotPresentException if the generic superclass
1204      *     refers to a non-existent type declaration
1205      * @throws java.lang.reflect.MalformedParameterizedTypeException if the
1206      *     generic superclass refers to a parameterized type that cannot be
1207      *     instantiated  for any reason
1208      * @return the direct superclass of the class represented by this {@code Class} object
1209      * @since 1.5
1210      */
1211     public Type getGenericSuperclass() {
1212         ClassRepository info = getGenericInfo();
1213         if (info == null) {
1214             return getSuperclass();
1215         }
1216 
1217         // Historical irregularity:
1218         // Generic signature marks interfaces with superclass = Object
1219         // but this API returns null for interfaces
1220         if (isInterface()) {
1221             return null;
1222         }
1223 
1224         return info.getSuperclass();
1225     }
1226 
1227     /**
1228      * Gets the package of this class.
1229      *
1230      * <p>If this class represents an array type, a primitive type or void,
1231      * this method returns {@code null}.
1232      *
1233      * @return the package of this class.
1234      */
1235     public Package getPackage() {
1236         if (isPrimitive() || isArray()) {
1237             return null;
1238         }
1239         ClassLoader cl = classLoader;
1240         return cl != null ? cl.definePackage(this)
1241                           : BootLoader.definePackage(this);
1242     }
1243 
1244     /**
1245      * Returns the fully qualified package name.
1246      *
1247      * <p> If this class is a top level class, then this method returns the fully
1248      * qualified name of the package that the class is a member of, or the
1249      * empty string if the class is in an unnamed package.
1250      *
1251      * <p> If this class is a member class, then this method is equivalent to
1252      * invoking {@code getPackageName()} on the {@linkplain #getEnclosingClass
1253      * enclosing class}.
1254      *
1255      * <p> If this class is a {@linkplain #isLocalClass local class} or an {@linkplain
1256      * #isAnonymousClass() anonymous class}, then this method is equivalent to
1257      * invoking {@code getPackageName()} on the {@linkplain #getDeclaringClass
1258      * declaring class} of the {@linkplain #getEnclosingMethod enclosing method} or
1259      * {@linkplain #getEnclosingConstructor enclosing constructor}.
1260      *
1261      * <p> If this class represents an array type then this method returns the
1262      * package name of the element type. If this class represents a primitive
1263      * type or void then the package name "{@code java.lang}" is returned.
1264      *
1265      * @return the fully qualified package name
1266      *
1267      * @since 9
1268      * @jls 6.7 Fully Qualified Names
1269      */
1270     public String getPackageName() {
1271         String pn = this.packageName;
1272         if (pn == null) {
1273             Class<?> c = isArray() ? elementType() : this;
1274             if (c.isPrimitive()) {
1275                 pn = "java.lang";
1276             } else {
1277                 String cn = c.getName();
1278                 int dot = cn.lastIndexOf('.');
1279                 pn = (dot != -1) ? cn.substring(0, dot).intern() : "";
1280             }
1281             this.packageName = pn;
1282         }
1283         return pn;
1284     }
1285 
1286     // cached package name
1287     private transient String packageName;
1288 
1289     /**
1290      * Returns the interfaces directly implemented by the class or interface
1291      * represented by this {@code Class} object.
1292      *
1293      * <p>If this {@code Class} object represents a class, the return value is an array
1294      * containing objects representing all interfaces directly implemented by
1295      * the class.  The order of the interface objects in the array corresponds
1296      * to the order of the interface names in the {@code implements} clause of
1297      * the declaration of the class represented by this {@code Class} object.  For example,
1298      * given the declaration:
1299      * <blockquote>
1300      * {@code class Shimmer implements FloorWax, DessertTopping { ... }}
1301      * </blockquote>
1302      * suppose the value of {@code s} is an instance of
1303      * {@code Shimmer}; the value of the expression:
1304      * <blockquote>
1305      * {@code s.getClass().getInterfaces()[0]}
1306      * </blockquote>
1307      * is the {@code Class} object that represents interface
1308      * {@code FloorWax}; and the value of:
1309      * <blockquote>
1310      * {@code s.getClass().getInterfaces()[1]}
1311      * </blockquote>
1312      * is the {@code Class} object that represents interface
1313      * {@code DessertTopping}.
1314      *
1315      * <p>If this {@code Class} object represents an interface, the array contains objects
1316      * representing all interfaces directly extended by the interface.  The
1317      * order of the interface objects in the array corresponds to the order of
1318      * the interface names in the {@code extends} clause of the declaration of
1319      * the interface represented by this {@code Class} object.
1320      *
1321      * <p>If this {@code Class} object represents a class or interface that implements no
1322      * interfaces, the method returns an array of length 0.
1323      *
1324      * <p>If this {@code Class} object represents a primitive type or void, the method
1325      * returns an array of length 0.
1326      *
1327      * <p>If this {@code Class} object represents an array type, the
1328      * interfaces {@code Cloneable} and {@code java.io.Serializable} are
1329      * returned in that order.
1330      *
1331      * @return an array of interfaces directly implemented by this class
1332      */
1333     public Class<?>[] getInterfaces() {
1334         // defensively copy before handing over to user code
1335         return getInterfaces(true);
1336     }
1337 
1338     private Class<?>[] getInterfaces(boolean cloneArray) {
1339         ReflectionData<T> rd = reflectionData();
1340         if (rd == null) {
1341             // no cloning required
1342             return getInterfaces0();
1343         } else {
1344             Class<?>[] interfaces = rd.interfaces;
1345             if (interfaces == null) {
1346                 interfaces = getInterfaces0();
1347                 rd.interfaces = interfaces;
1348             }
1349             // defensively copy if requested
1350             return cloneArray ? interfaces.clone() : interfaces;
1351         }
1352     }
1353 
1354     private native Class<?>[] getInterfaces0();
1355 
1356     /**
1357      * Returns the {@code Type}s representing the interfaces
1358      * directly implemented by the class or interface represented by
1359      * this {@code Class} object.
1360      *
1361      * <p>If a superinterface is a parameterized type, the
1362      * {@code Type} object returned for it must accurately reflect
1363      * the actual type arguments used in the source code. The
1364      * parameterized type representing each superinterface is created
1365      * if it had not been created before. See the declaration of
1366      * {@link java.lang.reflect.ParameterizedType ParameterizedType}
1367      * for the semantics of the creation process for parameterized
1368      * types.
1369      *
1370      * <p>If this {@code Class} object represents a class, the return value is an array
1371      * containing objects representing all interfaces directly implemented by
1372      * the class.  The order of the interface objects in the array corresponds
1373      * to the order of the interface names in the {@code implements} clause of
1374      * the declaration of the class represented by this {@code Class} object.
1375      *
1376      * <p>If this {@code Class} object represents an interface, the array contains objects
1377      * representing all interfaces directly extended by the interface.  The
1378      * order of the interface objects in the array corresponds to the order of
1379      * the interface names in the {@code extends} clause of the declaration of
1380      * the interface represented by this {@code Class} object.
1381      *
1382      * <p>If this {@code Class} object represents a class or interface that implements no
1383      * interfaces, the method returns an array of length 0.
1384      *
1385      * <p>If this {@code Class} object represents a primitive type or void, the method
1386      * returns an array of length 0.
1387      *
1388      * <p>If this {@code Class} object represents an array type, the
1389      * interfaces {@code Cloneable} and {@code java.io.Serializable} are
1390      * returned in that order.
1391      *
1392      * @throws java.lang.reflect.GenericSignatureFormatError
1393      *     if the generic class signature does not conform to the
1394      *     format specified in section {@jvms 4.7.9} of <cite>The
1395      *     Java Virtual Machine Specification</cite>
1396      * @throws TypeNotPresentException if any of the generic
1397      *     superinterfaces refers to a non-existent type declaration
1398      * @throws java.lang.reflect.MalformedParameterizedTypeException
1399      *     if any of the generic superinterfaces refer to a parameterized
1400      *     type that cannot be instantiated for any reason
1401      * @return an array of interfaces directly implemented by this class
1402      * @since 1.5
1403      */
1404     public Type[] getGenericInterfaces() {
1405         ClassRepository info = getGenericInfo();
1406         return (info == null) ?  getInterfaces() : info.getSuperInterfaces();
1407     }
1408 
1409 
1410     /**
1411      * Returns the {@code Class} representing the component type of an
1412      * array.  If this class does not represent an array class this method
1413      * returns null.
1414      *
1415      * @return the {@code Class} representing the component type of this
1416      * class if this class is an array
1417      * @see     java.lang.reflect.Array
1418      * @since 1.1
1419      */
1420     public Class<?> getComponentType() {
1421         // Only return for array types. Storage may be reused for Class for instance types.
1422         if (isArray()) {
1423             return componentType;
1424         } else {
1425             return null;
1426         }
1427     }
1428 
1429     private final Class<?> componentType;
1430 
1431     /*
1432      * Returns the {@code Class} representing the element type of an array class.
1433      * If this class does not represent an array class, then this method returns
1434      * {@code null}.
1435      */
1436     private Class<?> elementType() {
1437         if (!isArray()) return null;
1438 
1439         Class<?> c = this;
1440         while (c.isArray()) {
1441             c = c.getComponentType();
1442         }
1443         return c;
1444     }
1445 
1446     /**
1447      * Returns the Java language modifiers for this class or interface, encoded
1448      * in an integer. The modifiers consist of the Java Virtual Machine's
1449      * constants for {@code public}, {@code protected},
1450      * {@code private}, {@code final}, {@code static},
1451      * {@code abstract} and {@code interface}; they should be decoded
1452      * using the methods of class {@code Modifier}.
1453      *
1454      * <p> If the underlying class is an array class:
1455      * <ul>
1456      * <li> its {@code public}, {@code private} and {@code protected}
1457      *      modifiers are the same as those of its component type
1458      * <li> its {@code abstract} and {@code final} modifiers are always
1459      *      {@code true}
1460      * <li> its interface modifier is always {@code false}, even when
1461      *      the component type is an interface
1462      * </ul>
1463      * If this {@code Class} object represents a primitive type or
1464      * void, its {@code public}, {@code abstract}, and {@code final}
1465      * modifiers are always {@code true}.
1466      * For {@code Class} objects representing void, primitive types, and
1467      * arrays, the values of other modifiers are {@code false} other
1468      * than as specified above.
1469      *
1470      * <p> The modifier encodings are defined in section {@jvms 4.1}
1471      * of <cite>The Java Virtual Machine Specification</cite>.
1472      *
1473      * @return the {@code int} representing the modifiers for this class
1474      * @see     java.lang.reflect.Modifier
1475      * @see #accessFlags()
1476      * @see <a
1477      * href="{@docRoot}/java.base/java/lang/reflect/package-summary.html#LanguageJvmModel">Java
1478      * programming language and JVM modeling in core reflection</a>
1479      * @since 1.1
1480      * @jls 8.1.1 Class Modifiers
1481      * @jls 9.1.1. Interface Modifiers
1482      * @jvms 4.1 The {@code ClassFile} Structure
1483      */
1484     @IntrinsicCandidate
1485     public native int getModifiers();
1486 
1487     /**
1488      * {@return an unmodifiable set of the {@linkplain AccessFlag access
1489      * flags} for this class, possibly empty}
1490      *
1491      * <p> If the underlying class is an array class:
1492      * <ul>
1493      * <li> its {@code PUBLIC}, {@code PRIVATE} and {@code PROTECTED}
1494      *      access flags are the same as those of its component type
1495      * <li> its {@code ABSTRACT} and {@code FINAL} flags are present
1496      * <li> its {@code INTERFACE} flag is absent, even when the
1497      *      component type is an interface
1498      * </ul>
1499      * If this {@code Class} object represents a primitive type or
1500      * void, the flags are {@code PUBLIC}, {@code ABSTRACT}, and
1501      * {@code FINAL}.
1502      * For {@code Class} objects representing void, primitive types, and
1503      * arrays, access flags are absent other than as specified above.
1504      *
1505      * @see #getModifiers()
1506      * @jvms 4.1 The ClassFile Structure
1507      * @jvms 4.7.6 The InnerClasses Attribute
1508      * @since 20
1509      */
1510     public Set<AccessFlag> accessFlags() {
1511         // Location.CLASS allows SUPER and AccessFlag.MODULE which
1512         // INNER_CLASS forbids. INNER_CLASS allows PRIVATE, PROTECTED,
1513         // and STATIC, which are not allowed on Location.CLASS.
1514         // Use getClassAccessFlagsRaw to expose SUPER status.
1515         var location = (isMemberClass() || isLocalClass() ||
1516                         isAnonymousClass() || isArray()) ?
1517             AccessFlag.Location.INNER_CLASS :
1518             AccessFlag.Location.CLASS;
1519         return AccessFlag.maskToAccessFlags((location == AccessFlag.Location.CLASS) ?
1520                                             getClassAccessFlagsRaw() :
1521                                             getModifiers(),
1522                                             location);
1523     }
1524 
1525     /**
1526      * Gets the signers of this class.
1527      *
1528      * @return  the signers of this class, or null if there are no signers.  In
1529      *          particular, this method returns null if this {@code Class} object represents
1530      *          a primitive type or void.
1531      * @since   1.1
1532      */
1533     public native Object[] getSigners();
1534 
1535 
1536     /**
1537      * Set the signers of this class.
1538      */
1539     native void setSigners(Object[] signers);
1540 
1541 
1542     /**
1543      * If this {@code Class} object represents a local or anonymous
1544      * class within a method, returns a {@link
1545      * java.lang.reflect.Method Method} object representing the
1546      * immediately enclosing method of the underlying class. Returns
1547      * {@code null} otherwise.
1548      *
1549      * In particular, this method returns {@code null} if the underlying
1550      * class is a local or anonymous class immediately enclosed by a class or
1551      * interface declaration, instance initializer or static initializer.
1552      *
1553      * @return the immediately enclosing method of the underlying class, if
1554      *     that class is a local or anonymous class; otherwise {@code null}.
1555      *
1556      * @throws SecurityException
1557      *         If a security manager, <i>s</i>, is present and any of the
1558      *         following conditions is met:
1559      *
1560      *         <ul>
1561      *
1562      *         <li> the caller's class loader is not the same as the
1563      *         class loader of the enclosing class and invocation of
1564      *         {@link SecurityManager#checkPermission
1565      *         s.checkPermission} method with
1566      *         {@code RuntimePermission("accessDeclaredMembers")}
1567      *         denies access to the methods within the enclosing class
1568      *
1569      *         <li> the caller's class loader is not the same as or an
1570      *         ancestor of the class loader for the enclosing class and
1571      *         invocation of {@link SecurityManager#checkPackageAccess
1572      *         s.checkPackageAccess()} denies access to the package
1573      *         of the enclosing class
1574      *
1575      *         </ul>
1576      * @since 1.5
1577      */
1578     @CallerSensitive
1579     public Method getEnclosingMethod() throws SecurityException {
1580         EnclosingMethodInfo enclosingInfo = getEnclosingMethodInfo();
1581 
1582         if (enclosingInfo == null)
1583             return null;
1584         else {
1585             if (!enclosingInfo.isMethod())
1586                 return null;
1587 
1588             MethodRepository typeInfo = MethodRepository.make(enclosingInfo.getDescriptor(),
1589                                                               getFactory());
1590             Class<?>   returnType       = toClass(typeInfo.getReturnType());
1591             Type []    parameterTypes   = typeInfo.getParameterTypes();
1592             Class<?>[] parameterClasses = new Class<?>[parameterTypes.length];
1593 
1594             // Convert Types to Classes; returned types *should*
1595             // be class objects since the methodDescriptor's used
1596             // don't have generics information
1597             for(int i = 0; i < parameterClasses.length; i++)
1598                 parameterClasses[i] = toClass(parameterTypes[i]);
1599 
1600             // Perform access check
1601             final Class<?> enclosingCandidate = enclosingInfo.getEnclosingClass();
1602             @SuppressWarnings("removal")
1603             SecurityManager sm = System.getSecurityManager();
1604             if (sm != null) {
1605                 enclosingCandidate.checkMemberAccess(sm, Member.DECLARED,
1606                                                      Reflection.getCallerClass(), true);
1607             }
1608             Method[] candidates = enclosingCandidate.privateGetDeclaredMethods(false);
1609 
1610             /*
1611              * Loop over all declared methods; match method name,
1612              * number of and type of parameters, *and* return
1613              * type.  Matching return type is also necessary
1614              * because of covariant returns, etc.
1615              */
1616             ReflectionFactory fact = getReflectionFactory();
1617             for (Method m : candidates) {
1618                 if (m.getName().equals(enclosingInfo.getName()) &&
1619                     arrayContentsEq(parameterClasses,
1620                                     fact.getExecutableSharedParameterTypes(m))) {
1621                     // finally, check return type
1622                     if (m.getReturnType().equals(returnType)) {
1623                         return fact.copyMethod(m);
1624                     }
1625                 }
1626             }
1627 
1628             throw new InternalError("Enclosing method not found");
1629         }
1630     }
1631 
1632     private native Object[] getEnclosingMethod0();
1633 
1634     private EnclosingMethodInfo getEnclosingMethodInfo() {
1635         Object[] enclosingInfo = getEnclosingMethod0();
1636         if (enclosingInfo == null)
1637             return null;
1638         else {
1639             return new EnclosingMethodInfo(enclosingInfo);
1640         }
1641     }
1642 
1643     private static final class EnclosingMethodInfo {
1644         private final Class<?> enclosingClass;
1645         private final String name;
1646         private final String descriptor;
1647 
1648         static void validate(Object[] enclosingInfo) {
1649             if (enclosingInfo.length != 3)
1650                 throw new InternalError("Malformed enclosing method information");
1651             try {
1652                 // The array is expected to have three elements:
1653 
1654                 // the immediately enclosing class
1655                 Class<?> enclosingClass = (Class<?>)enclosingInfo[0];
1656                 assert(enclosingClass != null);
1657 
1658                 // the immediately enclosing method or constructor's
1659                 // name (can be null).
1660                 String name = (String)enclosingInfo[1];
1661 
1662                 // the immediately enclosing method or constructor's
1663                 // descriptor (null iff name is).
1664                 String descriptor = (String)enclosingInfo[2];
1665                 assert((name != null && descriptor != null) || name == descriptor);
1666             } catch (ClassCastException cce) {
1667                 throw new InternalError("Invalid type in enclosing method information", cce);
1668             }
1669         }
1670 
1671         EnclosingMethodInfo(Object[] enclosingInfo) {
1672             validate(enclosingInfo);
1673             this.enclosingClass = (Class<?>)enclosingInfo[0];
1674             this.name = (String)enclosingInfo[1];
1675             this.descriptor = (String)enclosingInfo[2];
1676         }
1677 
1678         boolean isPartial() {
1679             return enclosingClass == null || name == null || descriptor == null;
1680         }
1681 
1682         boolean isConstructor() { return !isPartial() && ConstantDescs.INIT_NAME.equals(name); }
1683 
1684         boolean isMethod() { return !isPartial() && !isConstructor() && !ConstantDescs.CLASS_INIT_NAME.equals(name); }
1685 
1686         Class<?> getEnclosingClass() { return enclosingClass; }
1687 
1688         String getName() { return name; }
1689 
1690         String getDescriptor() { return descriptor; }
1691 
1692     }
1693 
1694     private static Class<?> toClass(Type o) {
1695         if (o instanceof GenericArrayType gat)
1696             return toClass(gat.getGenericComponentType()).arrayType();
1697         return (Class<?>)o;
1698      }
1699 
1700     /**
1701      * If this {@code Class} object represents a local or anonymous
1702      * class within a constructor, returns a {@link
1703      * java.lang.reflect.Constructor Constructor} object representing
1704      * the immediately enclosing constructor of the underlying
1705      * class. Returns {@code null} otherwise.  In particular, this
1706      * method returns {@code null} if the underlying class is a local
1707      * or anonymous class immediately enclosed by a class or
1708      * interface declaration, instance initializer or static initializer.
1709      *
1710      * @return the immediately enclosing constructor of the underlying class, if
1711      *     that class is a local or anonymous class; otherwise {@code null}.
1712      * @throws SecurityException
1713      *         If a security manager, <i>s</i>, is present and any of the
1714      *         following conditions is met:
1715      *
1716      *         <ul>
1717      *
1718      *         <li> the caller's class loader is not the same as the
1719      *         class loader of the enclosing class and invocation of
1720      *         {@link SecurityManager#checkPermission
1721      *         s.checkPermission} method with
1722      *         {@code RuntimePermission("accessDeclaredMembers")}
1723      *         denies access to the constructors within the enclosing class
1724      *
1725      *         <li> the caller's class loader is not the same as or an
1726      *         ancestor of the class loader for the enclosing class and
1727      *         invocation of {@link SecurityManager#checkPackageAccess
1728      *         s.checkPackageAccess()} denies access to the package
1729      *         of the enclosing class
1730      *
1731      *         </ul>
1732      * @since 1.5
1733      */
1734     @CallerSensitive
1735     public Constructor<?> getEnclosingConstructor() throws SecurityException {
1736         EnclosingMethodInfo enclosingInfo = getEnclosingMethodInfo();
1737 
1738         if (enclosingInfo == null)
1739             return null;
1740         else {
1741             if (!enclosingInfo.isConstructor())
1742                 return null;
1743 
1744             ConstructorRepository typeInfo = ConstructorRepository.make(enclosingInfo.getDescriptor(),
1745                                                                         getFactory());
1746             Type []    parameterTypes   = typeInfo.getParameterTypes();
1747             Class<?>[] parameterClasses = new Class<?>[parameterTypes.length];
1748 
1749             // Convert Types to Classes; returned types *should*
1750             // be class objects since the methodDescriptor's used
1751             // don't have generics information
1752             for(int i = 0; i < parameterClasses.length; i++)
1753                 parameterClasses[i] = toClass(parameterTypes[i]);
1754 
1755             // Perform access check
1756             final Class<?> enclosingCandidate = enclosingInfo.getEnclosingClass();
1757             @SuppressWarnings("removal")
1758             SecurityManager sm = System.getSecurityManager();
1759             if (sm != null) {
1760                 enclosingCandidate.checkMemberAccess(sm, Member.DECLARED,
1761                                                      Reflection.getCallerClass(), true);
1762             }
1763 
1764             Constructor<?>[] candidates = enclosingCandidate
1765                     .privateGetDeclaredConstructors(false);
1766             /*
1767              * Loop over all declared constructors; match number
1768              * of and type of parameters.
1769              */
1770             ReflectionFactory fact = getReflectionFactory();
1771             for (Constructor<?> c : candidates) {
1772                 if (arrayContentsEq(parameterClasses,
1773                                     fact.getExecutableSharedParameterTypes(c))) {
1774                     return fact.copyConstructor(c);
1775                 }
1776             }
1777 
1778             throw new InternalError("Enclosing constructor not found");
1779         }
1780     }
1781 
1782 
1783     /**
1784      * If the class or interface represented by this {@code Class} object
1785      * is a member of another class, returns the {@code Class} object
1786      * representing the class in which it was declared.  This method returns
1787      * null if this class or interface is not a member of any other class.  If
1788      * this {@code Class} object represents an array class, a primitive
1789      * type, or void, then this method returns null.
1790      *
1791      * @return the declaring class for this class
1792      * @throws SecurityException
1793      *         If a security manager, <i>s</i>, is present and the caller's
1794      *         class loader is not the same as or an ancestor of the class
1795      *         loader for the declaring class and invocation of {@link
1796      *         SecurityManager#checkPackageAccess s.checkPackageAccess()}
1797      *         denies access to the package of the declaring class
1798      * @since 1.1
1799      */
1800     @CallerSensitive
1801     public Class<?> getDeclaringClass() throws SecurityException {
1802         final Class<?> candidate = getDeclaringClass0();
1803 
1804         if (candidate != null) {
1805             @SuppressWarnings("removal")
1806             SecurityManager sm = System.getSecurityManager();
1807             if (sm != null) {
1808                 candidate.checkPackageAccess(sm,
1809                     ClassLoader.getClassLoader(Reflection.getCallerClass()), true);
1810             }
1811         }
1812         return candidate;
1813     }
1814 
1815     private native Class<?> getDeclaringClass0();
1816 
1817 
1818     /**
1819      * Returns the immediately enclosing class of the underlying
1820      * class.  If the underlying class is a top level class this
1821      * method returns {@code null}.
1822      * @return the immediately enclosing class of the underlying class
1823      * @throws     SecurityException
1824      *             If a security manager, <i>s</i>, is present and the caller's
1825      *             class loader is not the same as or an ancestor of the class
1826      *             loader for the enclosing class and invocation of {@link
1827      *             SecurityManager#checkPackageAccess s.checkPackageAccess()}
1828      *             denies access to the package of the enclosing class
1829      * @since 1.5
1830      */
1831     @CallerSensitive
1832     public Class<?> getEnclosingClass() throws SecurityException {
1833         // There are five kinds of classes (or interfaces):
1834         // a) Top level classes
1835         // b) Nested classes (static member classes)
1836         // c) Inner classes (non-static member classes)
1837         // d) Local classes (named classes declared within a method)
1838         // e) Anonymous classes
1839 
1840 
1841         // JVM Spec 4.7.7: A class must have an EnclosingMethod
1842         // attribute if and only if it is a local class or an
1843         // anonymous class.
1844         EnclosingMethodInfo enclosingInfo = getEnclosingMethodInfo();
1845         Class<?> enclosingCandidate;
1846 
1847         if (enclosingInfo == null) {
1848             // This is a top level or a nested class or an inner class (a, b, or c)
1849             enclosingCandidate = getDeclaringClass0();
1850         } else {
1851             Class<?> enclosingClass = enclosingInfo.getEnclosingClass();
1852             // This is a local class or an anonymous class (d or e)
1853             if (enclosingClass == this || enclosingClass == null)
1854                 throw new InternalError("Malformed enclosing method information");
1855             else
1856                 enclosingCandidate = enclosingClass;
1857         }
1858 
1859         if (enclosingCandidate != null) {
1860             @SuppressWarnings("removal")
1861             SecurityManager sm = System.getSecurityManager();
1862             if (sm != null) {
1863                 enclosingCandidate.checkPackageAccess(sm,
1864                     ClassLoader.getClassLoader(Reflection.getCallerClass()), true);
1865             }
1866         }
1867         return enclosingCandidate;
1868     }
1869 
1870     /**
1871      * Returns the simple name of the underlying class as given in the
1872      * source code. An empty string is returned if the underlying class is
1873      * {@linkplain #isAnonymousClass() anonymous}.
1874      * A {@linkplain #isSynthetic() synthetic class}, one not present
1875      * in source code, can have a non-empty name including special
1876      * characters, such as "{@code $}".
1877      *
1878      * <p>The simple name of an {@linkplain #isArray() array class} is the simple name of the
1879      * component type with "[]" appended.  In particular the simple
1880      * name of an array class whose component type is anonymous is "[]".
1881      *
1882      * @return the simple name of the underlying class
1883      * @since 1.5
1884      */
1885     public String getSimpleName() {
1886         ReflectionData<T> rd = reflectionData();
1887         String simpleName = rd.simpleName;
1888         if (simpleName == null) {
1889             rd.simpleName = simpleName = getSimpleName0();
1890         }
1891         return simpleName;
1892     }
1893 
1894     private String getSimpleName0() {
1895         if (isArray()) {
1896             return getComponentType().getSimpleName().concat("[]");
1897         }
1898         String simpleName = getSimpleBinaryName();
1899         if (simpleName == null) { // top level class
1900             simpleName = getName();
1901             simpleName = simpleName.substring(simpleName.lastIndexOf('.') + 1); // strip the package name
1902         }
1903         return simpleName;
1904     }
1905 
1906     /**
1907      * Return an informative string for the name of this class or interface.
1908      *
1909      * @return an informative string for the name of this class or interface
1910      * @since 1.8
1911      */
1912     public String getTypeName() {
1913         if (isArray()) {
1914             try {
1915                 Class<?> cl = this;
1916                 int dimensions = 0;
1917                 do {
1918                     dimensions++;
1919                     cl = cl.getComponentType();
1920                 } while (cl.isArray());
1921                 return cl.getName().concat("[]".repeat(dimensions));
1922             } catch (Throwable e) { /*FALLTHRU*/ }
1923         }
1924         return getName();
1925     }
1926 
1927     /**
1928      * Returns the canonical name of the underlying class as
1929      * defined by <cite>The Java Language Specification</cite>.
1930      * Returns {@code null} if the underlying class does not have a canonical
1931      * name. Classes without canonical names include:
1932      * <ul>
1933      * <li>a {@linkplain #isLocalClass() local class}
1934      * <li>a {@linkplain #isAnonymousClass() anonymous class}
1935      * <li>a {@linkplain #isHidden() hidden class}
1936      * <li>an array whose component type does not have a canonical name</li>
1937      * </ul>
1938      *
1939      * The canonical name for a primitive class is the keyword for the
1940      * corresponding primitive type ({@code byte}, {@code short},
1941      * {@code char}, {@code int}, and so on).
1942      *
1943      * <p>An array type has a canonical name if and only if its
1944      * component type has a canonical name. When an array type has a
1945      * canonical name, it is equal to the canonical name of the
1946      * component type followed by "{@code []}".
1947      *
1948      * @return the canonical name of the underlying class if it exists, and
1949      * {@code null} otherwise.
1950      * @jls 6.7 Fully Qualified Names and Canonical Names
1951      * @since 1.5
1952      */
1953     public String getCanonicalName() {
1954         ReflectionData<T> rd = reflectionData();
1955         String canonicalName = rd.canonicalName;
1956         if (canonicalName == null) {
1957             rd.canonicalName = canonicalName = getCanonicalName0();
1958         }
1959         return canonicalName == ReflectionData.NULL_SENTINEL? null : canonicalName;
1960     }
1961 
1962     private String getCanonicalName0() {
1963         if (isArray()) {
1964             String canonicalName = getComponentType().getCanonicalName();
1965             if (canonicalName != null)
1966                 return canonicalName.concat("[]");
1967             else
1968                 return ReflectionData.NULL_SENTINEL;
1969         }
1970         if (isHidden() || isLocalOrAnonymousClass())
1971             return ReflectionData.NULL_SENTINEL;
1972         Class<?> enclosingClass = getEnclosingClass();
1973         if (enclosingClass == null) { // top level class
1974             return getName();
1975         } else {
1976             String enclosingName = enclosingClass.getCanonicalName();
1977             if (enclosingName == null)
1978                 return ReflectionData.NULL_SENTINEL;
1979             String simpleName = getSimpleName();
1980             return new StringBuilder(enclosingName.length() + simpleName.length() + 1)
1981                     .append(enclosingName)
1982                     .append('.')
1983                     .append(simpleName)
1984                     .toString();
1985         }
1986     }
1987 
1988     /**
1989      * Returns {@code true} if and only if the underlying class
1990      * is an anonymous class.
1991      *
1992      * @apiNote
1993      * An anonymous class is not a {@linkplain #isHidden() hidden class}.
1994      *
1995      * @return {@code true} if and only if this class is an anonymous class.
1996      * @since 1.5
1997      * @jls 15.9.5 Anonymous Class Declarations
1998      */
1999     public boolean isAnonymousClass() {
2000         return !isArray() && isLocalOrAnonymousClass() &&
2001                 getSimpleBinaryName0() == null;
2002     }
2003 
2004     /**
2005      * Returns {@code true} if and only if the underlying class
2006      * is a local class.
2007      *
2008      * @return {@code true} if and only if this class is a local class.
2009      * @since 1.5
2010      * @jls 14.3 Local Class Declarations
2011      */
2012     public boolean isLocalClass() {
2013         return isLocalOrAnonymousClass() &&
2014                 (isArray() || getSimpleBinaryName0() != null);
2015     }
2016 
2017     /**
2018      * Returns {@code true} if and only if the underlying class
2019      * is a member class.
2020      *
2021      * @return {@code true} if and only if this class is a member class.
2022      * @since 1.5
2023      * @jls 8.5 Member Type Declarations
2024      */
2025     public boolean isMemberClass() {
2026         return !isLocalOrAnonymousClass() && getDeclaringClass0() != null;
2027     }
2028 
2029     /**
2030      * Returns the "simple binary name" of the underlying class, i.e.,
2031      * the binary name without the leading enclosing class name.
2032      * Returns {@code null} if the underlying class is a top level
2033      * class.
2034      */
2035     private String getSimpleBinaryName() {
2036         if (isTopLevelClass())
2037             return null;
2038         String name = getSimpleBinaryName0();
2039         if (name == null) // anonymous class
2040             return "";
2041         return name;
2042     }
2043 
2044     private native String getSimpleBinaryName0();
2045 
2046     /**
2047      * Returns {@code true} if this is a top level class.  Returns {@code false}
2048      * otherwise.
2049      */
2050     private boolean isTopLevelClass() {
2051         return !isLocalOrAnonymousClass() && getDeclaringClass0() == null;
2052     }
2053 
2054     /**
2055      * Returns {@code true} if this is a local class or an anonymous
2056      * class.  Returns {@code false} otherwise.
2057      */
2058     private boolean isLocalOrAnonymousClass() {
2059         // JVM Spec 4.7.7: A class must have an EnclosingMethod
2060         // attribute if and only if it is a local class or an
2061         // anonymous class.
2062         return hasEnclosingMethodInfo();
2063     }
2064 
2065     private boolean hasEnclosingMethodInfo() {
2066         Object[] enclosingInfo = getEnclosingMethod0();
2067         if (enclosingInfo != null) {
2068             EnclosingMethodInfo.validate(enclosingInfo);
2069             return true;
2070         }
2071         return false;
2072     }
2073 
2074     /**
2075      * Returns an array containing {@code Class} objects representing all
2076      * the public classes and interfaces that are members of the class
2077      * represented by this {@code Class} object.  This includes public
2078      * class and interface members inherited from superclasses and public class
2079      * and interface members declared by the class.  This method returns an
2080      * array of length 0 if this {@code Class} object has no public member
2081      * classes or interfaces.  This method also returns an array of length 0 if
2082      * this {@code Class} object represents a primitive type, an array
2083      * class, or void.
2084      *
2085      * @return the array of {@code Class} objects representing the public
2086      *         members of this class
2087      * @throws SecurityException
2088      *         If a security manager, <i>s</i>, is present and
2089      *         the caller's class loader is not the same as or an
2090      *         ancestor of the class loader for the current class and
2091      *         invocation of {@link SecurityManager#checkPackageAccess
2092      *         s.checkPackageAccess()} denies access to the package
2093      *         of this class.
2094      *
2095      * @since 1.1
2096      */
2097     @SuppressWarnings("removal")
2098     @CallerSensitive
2099     public Class<?>[] getClasses() {
2100         SecurityManager sm = System.getSecurityManager();
2101         if (sm != null) {
2102             checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), false);
2103         }
2104 
2105         // Privileged so this implementation can look at DECLARED classes,
2106         // something the caller might not have privilege to do.  The code here
2107         // is allowed to look at DECLARED classes because (1) it does not hand
2108         // out anything other than public members and (2) public member access
2109         // has already been ok'd by the SecurityManager.
2110 
2111         return java.security.AccessController.doPrivileged(
2112             new java.security.PrivilegedAction<>() {
2113                 public Class<?>[] run() {
2114                     List<Class<?>> list = new ArrayList<>();
2115                     Class<?> currentClass = Class.this;
2116                     while (currentClass != null) {
2117                         for (Class<?> m : currentClass.getDeclaredClasses()) {
2118                             if (Modifier.isPublic(m.getModifiers())) {
2119                                 list.add(m);
2120                             }
2121                         }
2122                         currentClass = currentClass.getSuperclass();
2123                     }
2124                     return list.toArray(new Class<?>[0]);
2125                 }
2126             });
2127     }
2128 
2129 
2130     /**
2131      * Returns an array containing {@code Field} objects reflecting all
2132      * the accessible public fields of the class or interface represented by
2133      * this {@code Class} object.
2134      *
2135      * <p> If this {@code Class} object represents a class or interface with
2136      * no accessible public fields, then this method returns an array of length
2137      * 0.
2138      *
2139      * <p> If this {@code Class} object represents a class, then this method
2140      * returns the public fields of the class and of all its superclasses and
2141      * superinterfaces.
2142      *
2143      * <p> If this {@code Class} object represents an interface, then this
2144      * method returns the fields of the interface and of all its
2145      * superinterfaces.
2146      *
2147      * <p> If this {@code Class} object represents an array type, a primitive
2148      * type, or void, then this method returns an array of length 0.
2149      *
2150      * <p> The elements in the returned array are not sorted and are not in any
2151      * particular order.
2152      *
2153      * @return the array of {@code Field} objects representing the
2154      *         public fields
2155      * @throws SecurityException
2156      *         If a security manager, <i>s</i>, is present and
2157      *         the caller's class loader is not the same as or an
2158      *         ancestor of the class loader for the current class and
2159      *         invocation of {@link SecurityManager#checkPackageAccess
2160      *         s.checkPackageAccess()} denies access to the package
2161      *         of this class.
2162      *
2163      * @since 1.1
2164      * @jls 8.2 Class Members
2165      * @jls 8.3 Field Declarations
2166      */
2167     @CallerSensitive
2168     public Field[] getFields() throws SecurityException {
2169         @SuppressWarnings("removal")
2170         SecurityManager sm = System.getSecurityManager();
2171         if (sm != null) {
2172             checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
2173         }
2174         return copyFields(privateGetPublicFields());
2175     }
2176 
2177 
2178     /**
2179      * Returns an array containing {@code Method} objects reflecting all the
2180      * public methods of the class or interface represented by this {@code
2181      * Class} object, including those declared by the class or interface and
2182      * those inherited from superclasses and superinterfaces.
2183      *
2184      * <p> If this {@code Class} object represents an array type, then the
2185      * returned array has a {@code Method} object for each of the public
2186      * methods inherited by the array type from {@code Object}. It does not
2187      * contain a {@code Method} object for {@code clone()}.
2188      *
2189      * <p> If this {@code Class} object represents an interface then the
2190      * returned array does not contain any implicitly declared methods from
2191      * {@code Object}. Therefore, if no methods are explicitly declared in
2192      * this interface or any of its superinterfaces then the returned array
2193      * has length 0. (Note that a {@code Class} object which represents a class
2194      * always has public methods, inherited from {@code Object}.)
2195      *
2196      * <p> The returned array never contains methods with names {@value
2197      * ConstantDescs#INIT_NAME} or {@value ConstantDescs#CLASS_INIT_NAME}.
2198      *
2199      * <p> The elements in the returned array are not sorted and are not in any
2200      * particular order.
2201      *
2202      * <p> Generally, the result is computed as with the following 4 step algorithm.
2203      * Let C be the class or interface represented by this {@code Class} object:
2204      * <ol>
2205      * <li> A union of methods is composed of:
2206      *   <ol type="a">
2207      *   <li> C's declared public instance and static methods as returned by
2208      *        {@link #getDeclaredMethods()} and filtered to include only public
2209      *        methods.</li>
2210      *   <li> If C is a class other than {@code Object}, then include the result
2211      *        of invoking this algorithm recursively on the superclass of C.</li>
2212      *   <li> Include the results of invoking this algorithm recursively on all
2213      *        direct superinterfaces of C, but include only instance methods.</li>
2214      *   </ol></li>
2215      * <li> Union from step 1 is partitioned into subsets of methods with same
2216      *      signature (name, parameter types) and return type.</li>
2217      * <li> Within each such subset only the most specific methods are selected.
2218      *      Let method M be a method from a set of methods with same signature
2219      *      and return type. M is most specific if there is no such method
2220      *      N != M from the same set, such that N is more specific than M.
2221      *      N is more specific than M if:
2222      *   <ol type="a">
2223      *   <li> N is declared by a class and M is declared by an interface; or</li>
2224      *   <li> N and M are both declared by classes or both by interfaces and
2225      *        N's declaring type is the same as or a subtype of M's declaring type
2226      *        (clearly, if M's and N's declaring types are the same type, then
2227      *        M and N are the same method).</li>
2228      *   </ol></li>
2229      * <li> The result of this algorithm is the union of all selected methods from
2230      *      step 3.</li>
2231      * </ol>
2232      *
2233      * @apiNote There may be more than one method with a particular name
2234      * and parameter types in a class because while the Java language forbids a
2235      * class to declare multiple methods with the same signature but different
2236      * return types, the Java virtual machine does not.  This
2237      * increased flexibility in the virtual machine can be used to
2238      * implement various language features.  For example, covariant
2239      * returns can be implemented with {@linkplain
2240      * java.lang.reflect.Method#isBridge bridge methods}; the bridge
2241      * method and the overriding method would have the same
2242      * signature but different return types.
2243      *
2244      * @return the array of {@code Method} objects representing the
2245      *         public methods of this class
2246      * @throws SecurityException
2247      *         If a security manager, <i>s</i>, is present and
2248      *         the caller's class loader is not the same as or an
2249      *         ancestor of the class loader for the current class and
2250      *         invocation of {@link SecurityManager#checkPackageAccess
2251      *         s.checkPackageAccess()} denies access to the package
2252      *         of this class.
2253      *
2254      * @jls 8.2 Class Members
2255      * @jls 8.4 Method Declarations
2256      * @since 1.1
2257      */
2258     @CallerSensitive
2259     public Method[] getMethods() throws SecurityException {
2260         @SuppressWarnings("removal")
2261         SecurityManager sm = System.getSecurityManager();
2262         if (sm != null) {
2263             checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
2264         }
2265         return copyMethods(privateGetPublicMethods());
2266     }
2267 
2268 
2269     /**
2270      * Returns an array containing {@code Constructor} objects reflecting
2271      * all the public constructors of the class represented by this
2272      * {@code Class} object.  An array of length 0 is returned if the
2273      * class has no public constructors, or if the class is an array class, or
2274      * if the class reflects a primitive type or void.
2275      *
2276      * @apiNote
2277      * While this method returns an array of {@code
2278      * Constructor<T>} objects (that is an array of constructors from
2279      * this class), the return type of this method is {@code
2280      * Constructor<?>[]} and <em>not</em> {@code Constructor<T>[]} as
2281      * might be expected.  This less informative return type is
2282      * necessary since after being returned from this method, the
2283      * array could be modified to hold {@code Constructor} objects for
2284      * different classes, which would violate the type guarantees of
2285      * {@code Constructor<T>[]}.
2286      *
2287      * @return the array of {@code Constructor} objects representing the
2288      *         public constructors of this class
2289      * @throws SecurityException
2290      *         If a security manager, <i>s</i>, is present and
2291      *         the caller's class loader is not the same as or an
2292      *         ancestor of the class loader for the current class and
2293      *         invocation of {@link SecurityManager#checkPackageAccess
2294      *         s.checkPackageAccess()} denies access to the package
2295      *         of this class.
2296      *
2297      * @see #getDeclaredConstructors()
2298      * @since 1.1
2299      */
2300     @CallerSensitive
2301     public Constructor<?>[] getConstructors() throws SecurityException {
2302         @SuppressWarnings("removal")
2303         SecurityManager sm = System.getSecurityManager();
2304         if (sm != null) {
2305             checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
2306         }
2307         return copyConstructors(privateGetDeclaredConstructors(true));
2308     }
2309 
2310 
2311     /**
2312      * Returns a {@code Field} object that reflects the specified public member
2313      * field of the class or interface represented by this {@code Class}
2314      * object. The {@code name} parameter is a {@code String} specifying the
2315      * simple name of the desired field.
2316      *
2317      * <p> The field to be reflected is determined by the algorithm that
2318      * follows.  Let C be the class or interface represented by this {@code Class} object:
2319      *
2320      * <OL>
2321      * <LI> If C declares a public field with the name specified, that is the
2322      *      field to be reflected.</LI>
2323      * <LI> If no field was found in step 1 above, this algorithm is applied
2324      *      recursively to each direct superinterface of C. The direct
2325      *      superinterfaces are searched in the order they were declared.</LI>
2326      * <LI> If no field was found in steps 1 and 2 above, and C has a
2327      *      superclass S, then this algorithm is invoked recursively upon S.
2328      *      If C has no superclass, then a {@code NoSuchFieldException}
2329      *      is thrown.</LI>
2330      * </OL>
2331      *
2332      * <p> If this {@code Class} object represents an array type, then this
2333      * method does not find the {@code length} field of the array type.
2334      *
2335      * @param name the field name
2336      * @return the {@code Field} object of this class specified by
2337      *         {@code name}
2338      * @throws NoSuchFieldException if a field with the specified name is
2339      *         not found.
2340      * @throws NullPointerException if {@code name} is {@code null}
2341      * @throws SecurityException
2342      *         If a security manager, <i>s</i>, is present and
2343      *         the caller's class loader is not the same as or an
2344      *         ancestor of the class loader for the current class and
2345      *         invocation of {@link SecurityManager#checkPackageAccess
2346      *         s.checkPackageAccess()} denies access to the package
2347      *         of this class.
2348      *
2349      * @since 1.1
2350      * @jls 8.2 Class Members
2351      * @jls 8.3 Field Declarations
2352      */
2353     @CallerSensitive
2354     public Field getField(String name)
2355         throws NoSuchFieldException, SecurityException {
2356         Objects.requireNonNull(name);
2357         @SuppressWarnings("removal")
2358         SecurityManager sm = System.getSecurityManager();
2359         if (sm != null) {
2360             checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
2361         }
2362         Field field = getField0(name);
2363         if (field == null) {
2364             throw new NoSuchFieldException(name);
2365         }
2366         return getReflectionFactory().copyField(field);
2367     }
2368 
2369 
2370     /**
2371      * Returns a {@code Method} object that reflects the specified public
2372      * member method of the class or interface represented by this
2373      * {@code Class} object. The {@code name} parameter is a
2374      * {@code String} specifying the simple name of the desired method. The
2375      * {@code parameterTypes} parameter is an array of {@code Class}
2376      * objects that identify the method's formal parameter types, in declared
2377      * order. If {@code parameterTypes} is {@code null}, it is
2378      * treated as if it were an empty array.
2379      *
2380      * <p> If this {@code Class} object represents an array type, then this
2381      * method finds any public method inherited by the array type from
2382      * {@code Object} except method {@code clone()}.
2383      *
2384      * <p> If this {@code Class} object represents an interface then this
2385      * method does not find any implicitly declared method from
2386      * {@code Object}. Therefore, if no methods are explicitly declared in
2387      * this interface or any of its superinterfaces, then this method does not
2388      * find any method.
2389      *
2390      * <p> This method does not find any method with name {@value
2391      * ConstantDescs#INIT_NAME} or {@value ConstantDescs#CLASS_INIT_NAME}.
2392      *
2393      * <p> Generally, the method to be reflected is determined by the 4 step
2394      * algorithm that follows.
2395      * Let C be the class or interface represented by this {@code Class} object:
2396      * <ol>
2397      * <li> A union of methods is composed of:
2398      *   <ol type="a">
2399      *   <li> C's declared public instance and static methods as returned by
2400      *        {@link #getDeclaredMethods()} and filtered to include only public
2401      *        methods that match given {@code name} and {@code parameterTypes}</li>
2402      *   <li> If C is a class other than {@code Object}, then include the result
2403      *        of invoking this algorithm recursively on the superclass of C.</li>
2404      *   <li> Include the results of invoking this algorithm recursively on all
2405      *        direct superinterfaces of C, but include only instance methods.</li>
2406      *   </ol></li>
2407      * <li> This union is partitioned into subsets of methods with same
2408      *      return type (the selection of methods from step 1 also guarantees that
2409      *      they have the same method name and parameter types).</li>
2410      * <li> Within each such subset only the most specific methods are selected.
2411      *      Let method M be a method from a set of methods with same VM
2412      *      signature (return type, name, parameter types).
2413      *      M is most specific if there is no such method N != M from the same
2414      *      set, such that N is more specific than M. N is more specific than M
2415      *      if:
2416      *   <ol type="a">
2417      *   <li> N is declared by a class and M is declared by an interface; or</li>
2418      *   <li> N and M are both declared by classes or both by interfaces and
2419      *        N's declaring type is the same as or a subtype of M's declaring type
2420      *        (clearly, if M's and N's declaring types are the same type, then
2421      *        M and N are the same method).</li>
2422      *   </ol></li>
2423      * <li> The result of this algorithm is chosen arbitrarily from the methods
2424      *      with most specific return type among all selected methods from step 3.
2425      *      Let R be a return type of a method M from the set of all selected methods
2426      *      from step 3. M is a method with most specific return type if there is
2427      *      no such method N != M from the same set, having return type S != R,
2428      *      such that S is a subtype of R as determined by
2429      *      R.class.{@link #isAssignableFrom}(S.class).
2430      * </ol>
2431      *
2432      * @apiNote There may be more than one method with matching name and
2433      * parameter types in a class because while the Java language forbids a
2434      * class to declare multiple methods with the same signature but different
2435      * return types, the Java virtual machine does not.  This
2436      * increased flexibility in the virtual machine can be used to
2437      * implement various language features.  For example, covariant
2438      * returns can be implemented with {@linkplain
2439      * java.lang.reflect.Method#isBridge bridge methods}; the bridge
2440      * method and the overriding method would have the same
2441      * signature but different return types. This method would return the
2442      * overriding method as it would have a more specific return type.
2443      *
2444      * @param name the name of the method
2445      * @param parameterTypes the list of parameters
2446      * @return the {@code Method} object that matches the specified
2447      *         {@code name} and {@code parameterTypes}
2448      * @throws NoSuchMethodException if a matching method is not found
2449      *         or if the name is {@value ConstantDescs#INIT_NAME} or
2450      *         {@value ConstantDescs#CLASS_INIT_NAME}.
2451      * @throws NullPointerException if {@code name} is {@code null}
2452      * @throws SecurityException
2453      *         If a security manager, <i>s</i>, is present and
2454      *         the caller's class loader is not the same as or an
2455      *         ancestor of the class loader for the current class and
2456      *         invocation of {@link SecurityManager#checkPackageAccess
2457      *         s.checkPackageAccess()} denies access to the package
2458      *         of this class.
2459      *
2460      * @jls 8.2 Class Members
2461      * @jls 8.4 Method Declarations
2462      * @since 1.1
2463      */
2464     @CallerSensitive
2465     public Method getMethod(String name, Class<?>... parameterTypes)
2466         throws NoSuchMethodException, SecurityException {
2467         Objects.requireNonNull(name);
2468         @SuppressWarnings("removal")
2469         SecurityManager sm = System.getSecurityManager();
2470         if (sm != null) {
2471             checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
2472         }
2473         Method method = getMethod0(name, parameterTypes);
2474         if (method == null) {
2475             throw new NoSuchMethodException(methodToString(name, parameterTypes));
2476         }
2477         return getReflectionFactory().copyMethod(method);
2478     }
2479 
2480     /**
2481      * Returns a {@code Constructor} object that reflects the specified
2482      * public constructor of the class represented by this {@code Class}
2483      * object. The {@code parameterTypes} parameter is an array of
2484      * {@code Class} objects that identify the constructor's formal
2485      * parameter types, in declared order.
2486      *
2487      * If this {@code Class} object represents an inner class
2488      * declared in a non-static context, the formal parameter types
2489      * include the explicit enclosing instance as the first parameter.
2490      *
2491      * <p> The constructor to reflect is the public constructor of the class
2492      * represented by this {@code Class} object whose formal parameter
2493      * types match those specified by {@code parameterTypes}.
2494      *
2495      * @param parameterTypes the parameter array
2496      * @return the {@code Constructor} object of the public constructor that
2497      *         matches the specified {@code parameterTypes}
2498      * @throws NoSuchMethodException if a matching constructor is not found,
2499      *         including when this {@code Class} object represents
2500      *         an interface, a primitive type, an array class, or void.
2501      * @throws SecurityException
2502      *         If a security manager, <i>s</i>, is present and
2503      *         the caller's class loader is not the same as or an
2504      *         ancestor of the class loader for the current class and
2505      *         invocation of {@link SecurityManager#checkPackageAccess
2506      *         s.checkPackageAccess()} denies access to the package
2507      *         of this class.
2508      *
2509      * @see #getDeclaredConstructor(Class<?>[])
2510      * @since 1.1
2511      */
2512     @CallerSensitive
2513     public Constructor<T> getConstructor(Class<?>... parameterTypes)
2514         throws NoSuchMethodException, SecurityException
2515     {
2516         @SuppressWarnings("removal")
2517         SecurityManager sm = System.getSecurityManager();
2518         if (sm != null) {
2519             checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), true);
2520         }
2521         return getReflectionFactory().copyConstructor(
2522             getConstructor0(parameterTypes, Member.PUBLIC));
2523     }
2524 
2525 
2526     /**
2527      * Returns an array of {@code Class} objects reflecting all the
2528      * classes and interfaces declared as members of the class represented by
2529      * this {@code Class} object. This includes public, protected, default
2530      * (package) access, and private classes and interfaces declared by the
2531      * class, but excludes inherited classes and interfaces.  This method
2532      * returns an array of length 0 if the class declares no classes or
2533      * interfaces as members, or if this {@code Class} object represents a
2534      * primitive type, an array class, or void.
2535      *
2536      * @return the array of {@code Class} objects representing all the
2537      *         declared members of this class
2538      * @throws SecurityException
2539      *         If a security manager, <i>s</i>, is present and any of the
2540      *         following conditions is met:
2541      *
2542      *         <ul>
2543      *
2544      *         <li> the caller's class loader is not the same as the
2545      *         class loader of this class and invocation of
2546      *         {@link SecurityManager#checkPermission
2547      *         s.checkPermission} method with
2548      *         {@code RuntimePermission("accessDeclaredMembers")}
2549      *         denies access to the declared classes within this class
2550      *
2551      *         <li> the caller's class loader is not the same as or an
2552      *         ancestor of the class loader for the current class and
2553      *         invocation of {@link SecurityManager#checkPackageAccess
2554      *         s.checkPackageAccess()} denies access to the package
2555      *         of this class
2556      *
2557      *         </ul>
2558      *
2559      * @since 1.1
2560      * @jls 8.5 Member Type Declarations
2561      */
2562     @CallerSensitive
2563     public Class<?>[] getDeclaredClasses() throws SecurityException {
2564         @SuppressWarnings("removal")
2565         SecurityManager sm = System.getSecurityManager();
2566         if (sm != null) {
2567             checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), false);
2568         }
2569         return getDeclaredClasses0();
2570     }
2571 
2572 
2573     /**
2574      * Returns an array of {@code Field} objects reflecting all the fields
2575      * declared by the class or interface represented by this
2576      * {@code Class} object. This includes public, protected, default
2577      * (package) access, and private fields, but excludes inherited fields.
2578      *
2579      * <p> If this {@code Class} object represents a class or interface with no
2580      * declared fields, then this method returns an array of length 0.
2581      *
2582      * <p> If this {@code Class} object represents an array type, a primitive
2583      * type, or void, then this method returns an array of length 0.
2584      *
2585      * <p> The elements in the returned array are not sorted and are not in any
2586      * particular order.
2587      *
2588      * @return  the array of {@code Field} objects representing all the
2589      *          declared fields of this class
2590      * @throws  SecurityException
2591      *          If a security manager, <i>s</i>, is present and any of the
2592      *          following conditions is met:
2593      *
2594      *          <ul>
2595      *
2596      *          <li> the caller's class loader is not the same as the
2597      *          class loader of this class and invocation of
2598      *          {@link SecurityManager#checkPermission
2599      *          s.checkPermission} method with
2600      *          {@code RuntimePermission("accessDeclaredMembers")}
2601      *          denies access to the declared fields within this class
2602      *
2603      *          <li> the caller's class loader is not the same as or an
2604      *          ancestor of the class loader for the current class and
2605      *          invocation of {@link SecurityManager#checkPackageAccess
2606      *          s.checkPackageAccess()} denies access to the package
2607      *          of this class
2608      *
2609      *          </ul>
2610      *
2611      * @since 1.1
2612      * @jls 8.2 Class Members
2613      * @jls 8.3 Field Declarations
2614      */
2615     @CallerSensitive
2616     public Field[] getDeclaredFields() throws SecurityException {
2617         @SuppressWarnings("removal")
2618         SecurityManager sm = System.getSecurityManager();
2619         if (sm != null) {
2620             checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
2621         }
2622         return copyFields(privateGetDeclaredFields(false));
2623     }
2624 
2625     /**
2626      * Returns an array of {@code RecordComponent} objects representing all the
2627      * record components of this record class, or {@code null} if this class is
2628      * not a record class.
2629      *
2630      * <p> The components are returned in the same order that they are declared
2631      * in the record header. The array is empty if this record class has no
2632      * components. If the class is not a record class, that is {@link
2633      * #isRecord()} returns {@code false}, then this method returns {@code null}.
2634      * Conversely, if {@link #isRecord()} returns {@code true}, then this method
2635      * returns a non-null value.
2636      *
2637      * @apiNote
2638      * <p> The following method can be used to find the record canonical constructor:
2639      *
2640      * {@snippet lang="java" :
2641      * static <T extends Record> Constructor<T> getCanonicalConstructor(Class<T> cls)
2642      *     throws NoSuchMethodException {
2643      *   Class<?>[] paramTypes =
2644      *     Arrays.stream(cls.getRecordComponents())
2645      *           .map(RecordComponent::getType)
2646      *           .toArray(Class<?>[]::new);
2647      *   return cls.getDeclaredConstructor(paramTypes);
2648      * }}
2649      *
2650      * @return  An array of {@code RecordComponent} objects representing all the
2651      *          record components of this record class, or {@code null} if this
2652      *          class is not a record class
2653      * @throws  SecurityException
2654      *          If a security manager, <i>s</i>, is present and any of the
2655      *          following conditions is met:
2656      *
2657      *          <ul>
2658      *
2659      *          <li> the caller's class loader is not the same as the
2660      *          class loader of this class and invocation of
2661      *          {@link SecurityManager#checkPermission
2662      *          s.checkPermission} method with
2663      *          {@code RuntimePermission("accessDeclaredMembers")}
2664      *          denies access to the declared methods within this class
2665      *
2666      *          <li> the caller's class loader is not the same as or an
2667      *          ancestor of the class loader for the current class and
2668      *          invocation of {@link SecurityManager#checkPackageAccess
2669      *          s.checkPackageAccess()} denies access to the package
2670      *          of this class
2671      *
2672      *          </ul>
2673      *
2674      * @jls 8.10 Record Classes
2675      * @since 16
2676      */
2677     @CallerSensitive
2678     public RecordComponent[] getRecordComponents() {
2679         @SuppressWarnings("removal")
2680         SecurityManager sm = System.getSecurityManager();
2681         if (sm != null) {
2682             checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
2683         }
2684         if (!isRecord()) {
2685             return null;
2686         }
2687         return getRecordComponents0();
2688     }
2689 
2690     /**
2691      * Returns an array containing {@code Method} objects reflecting all the
2692      * declared methods of the class or interface represented by this {@code
2693      * Class} object, including public, protected, default (package)
2694      * access, and private methods, but excluding inherited methods.
2695      * The declared methods may include methods <em>not</em> in the
2696      * source of the class or interface, including {@linkplain
2697      * Method#isBridge bridge methods} and other {@linkplain
2698      * Executable#isSynthetic synthetic} methods added by compilers.
2699      *
2700      * <p> If this {@code Class} object represents a class or interface that
2701      * has multiple declared methods with the same name and parameter types,
2702      * but different return types, then the returned array has a {@code Method}
2703      * object for each such method.
2704      *
2705      * <p> If this {@code Class} object represents a class or interface that
2706      * has a class initialization method {@value ConstantDescs#CLASS_INIT_NAME},
2707      * then the returned array does <em>not</em> have a corresponding {@code
2708      * Method} object.
2709      *
2710      * <p> If this {@code Class} object represents a class or interface with no
2711      * declared methods, then the returned array has length 0.
2712      *
2713      * <p> If this {@code Class} object represents an array type, a primitive
2714      * type, or void, then the returned array has length 0.
2715      *
2716      * <p> The elements in the returned array are not sorted and are not in any
2717      * particular order.
2718      *
2719      * @return  the array of {@code Method} objects representing all the
2720      *          declared methods of this class
2721      * @throws  SecurityException
2722      *          If a security manager, <i>s</i>, is present and any of the
2723      *          following conditions is met:
2724      *
2725      *          <ul>
2726      *
2727      *          <li> the caller's class loader is not the same as the
2728      *          class loader of this class and invocation of
2729      *          {@link SecurityManager#checkPermission
2730      *          s.checkPermission} method with
2731      *          {@code RuntimePermission("accessDeclaredMembers")}
2732      *          denies access to the declared methods within this class
2733      *
2734      *          <li> the caller's class loader is not the same as or an
2735      *          ancestor of the class loader for the current class and
2736      *          invocation of {@link SecurityManager#checkPackageAccess
2737      *          s.checkPackageAccess()} denies access to the package
2738      *          of this class
2739      *
2740      *          </ul>
2741      *
2742      * @jls 8.2 Class Members
2743      * @jls 8.4 Method Declarations
2744      * @see <a
2745      * href="{@docRoot}/java.base/java/lang/reflect/package-summary.html#LanguageJvmModel">Java
2746      * programming language and JVM modeling in core reflection</a>
2747      * @since 1.1
2748      */
2749     @CallerSensitive
2750     public Method[] getDeclaredMethods() throws SecurityException {
2751         @SuppressWarnings("removal")
2752         SecurityManager sm = System.getSecurityManager();
2753         if (sm != null) {
2754             checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
2755         }
2756         return copyMethods(privateGetDeclaredMethods(false));
2757     }
2758 
2759     /**
2760      * Returns an array of {@code Constructor} objects reflecting all the
2761      * constructors implicitly or explicitly declared by the class represented by this
2762      * {@code Class} object. These are public, protected, default
2763      * (package) access, and private constructors.  The elements in the array
2764      * returned are not sorted and are not in any particular order.  If the
2765      * class has a default constructor (JLS {@jls 8.8.9}), it is included in the returned array.
2766      * If a record class has a canonical constructor (JLS {@jls
2767      * 8.10.4.1}, {@jls 8.10.4.2}), it is included in the returned array.
2768      *
2769      * This method returns an array of length 0 if this {@code Class}
2770      * object represents an interface, a primitive type, an array class, or
2771      * void.
2772      *
2773      * @return  the array of {@code Constructor} objects representing all the
2774      *          declared constructors of this class
2775      * @throws  SecurityException
2776      *          If a security manager, <i>s</i>, is present and any of the
2777      *          following conditions is met:
2778      *
2779      *          <ul>
2780      *
2781      *          <li> the caller's class loader is not the same as the
2782      *          class loader of this class and invocation of
2783      *          {@link SecurityManager#checkPermission
2784      *          s.checkPermission} method with
2785      *          {@code RuntimePermission("accessDeclaredMembers")}
2786      *          denies access to the declared constructors within this class
2787      *
2788      *          <li> the caller's class loader is not the same as or an
2789      *          ancestor of the class loader for the current class and
2790      *          invocation of {@link SecurityManager#checkPackageAccess
2791      *          s.checkPackageAccess()} denies access to the package
2792      *          of this class
2793      *
2794      *          </ul>
2795      *
2796      * @since 1.1
2797      * @see #getConstructors()
2798      * @jls 8.8 Constructor Declarations
2799      */
2800     @CallerSensitive
2801     public Constructor<?>[] getDeclaredConstructors() throws SecurityException {
2802         @SuppressWarnings("removal")
2803         SecurityManager sm = System.getSecurityManager();
2804         if (sm != null) {
2805             checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
2806         }
2807         return copyConstructors(privateGetDeclaredConstructors(false));
2808     }
2809 
2810 
2811     /**
2812      * Returns a {@code Field} object that reflects the specified declared
2813      * field of the class or interface represented by this {@code Class}
2814      * object. The {@code name} parameter is a {@code String} that specifies
2815      * the simple name of the desired field.
2816      *
2817      * <p> If this {@code Class} object represents an array type, then this
2818      * method does not find the {@code length} field of the array type.
2819      *
2820      * @param name the name of the field
2821      * @return  the {@code Field} object for the specified field in this
2822      *          class
2823      * @throws  NoSuchFieldException if a field with the specified name is
2824      *          not found.
2825      * @throws  NullPointerException if {@code name} is {@code null}
2826      * @throws  SecurityException
2827      *          If a security manager, <i>s</i>, is present and any of the
2828      *          following conditions is met:
2829      *
2830      *          <ul>
2831      *
2832      *          <li> the caller's class loader is not the same as the
2833      *          class loader of this class and invocation of
2834      *          {@link SecurityManager#checkPermission
2835      *          s.checkPermission} method with
2836      *          {@code RuntimePermission("accessDeclaredMembers")}
2837      *          denies access to the declared field
2838      *
2839      *          <li> the caller's class loader is not the same as or an
2840      *          ancestor of the class loader for the current class and
2841      *          invocation of {@link SecurityManager#checkPackageAccess
2842      *          s.checkPackageAccess()} denies access to the package
2843      *          of this class
2844      *
2845      *          </ul>
2846      *
2847      * @since 1.1
2848      * @jls 8.2 Class Members
2849      * @jls 8.3 Field Declarations
2850      */
2851     @CallerSensitive
2852     public Field getDeclaredField(String name)
2853         throws NoSuchFieldException, SecurityException {
2854         Objects.requireNonNull(name);
2855         @SuppressWarnings("removal")
2856         SecurityManager sm = System.getSecurityManager();
2857         if (sm != null) {
2858             checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
2859         }
2860         Field field = searchFields(privateGetDeclaredFields(false), name);
2861         if (field == null) {
2862             throw new NoSuchFieldException(name);
2863         }
2864         return getReflectionFactory().copyField(field);
2865     }
2866 
2867 
2868     /**
2869      * Returns a {@code Method} object that reflects the specified
2870      * declared method of the class or interface represented by this
2871      * {@code Class} object. The {@code name} parameter is a
2872      * {@code String} that specifies the simple name of the desired
2873      * method, and the {@code parameterTypes} parameter is an array of
2874      * {@code Class} objects that identify the method's formal parameter
2875      * types, in declared order.  If more than one method with the same
2876      * parameter types is declared in a class, and one of these methods has a
2877      * return type that is more specific than any of the others, that method is
2878      * returned; otherwise one of the methods is chosen arbitrarily.  If the
2879      * name is {@value ConstantDescs#INIT_NAME} or {@value
2880      * ConstantDescs#CLASS_INIT_NAME} a {@code NoSuchMethodException}
2881      * is raised.
2882      *
2883      * <p> If this {@code Class} object represents an array type, then this
2884      * method does not find the {@code clone()} method.
2885      *
2886      * @param name the name of the method
2887      * @param parameterTypes the parameter array
2888      * @return  the {@code Method} object for the method of this class
2889      *          matching the specified name and parameters
2890      * @throws  NoSuchMethodException if a matching method is not found.
2891      * @throws  NullPointerException if {@code name} is {@code null}
2892      * @throws  SecurityException
2893      *          If a security manager, <i>s</i>, is present and any of the
2894      *          following conditions is met:
2895      *
2896      *          <ul>
2897      *
2898      *          <li> the caller's class loader is not the same as the
2899      *          class loader of this class and invocation of
2900      *          {@link SecurityManager#checkPermission
2901      *          s.checkPermission} method with
2902      *          {@code RuntimePermission("accessDeclaredMembers")}
2903      *          denies access to the declared method
2904      *
2905      *          <li> the caller's class loader is not the same as or an
2906      *          ancestor of the class loader for the current class and
2907      *          invocation of {@link SecurityManager#checkPackageAccess
2908      *          s.checkPackageAccess()} denies access to the package
2909      *          of this class
2910      *
2911      *          </ul>
2912      *
2913      * @jls 8.2 Class Members
2914      * @jls 8.4 Method Declarations
2915      * @since 1.1
2916      */
2917     @CallerSensitive
2918     public Method getDeclaredMethod(String name, Class<?>... parameterTypes)
2919         throws NoSuchMethodException, SecurityException {
2920         Objects.requireNonNull(name);
2921         @SuppressWarnings("removal")
2922         SecurityManager sm = System.getSecurityManager();
2923         if (sm != null) {
2924             checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
2925         }
2926         Method method = searchMethods(privateGetDeclaredMethods(false), name, parameterTypes);
2927         if (method == null) {
2928             throw new NoSuchMethodException(methodToString(name, parameterTypes));
2929         }
2930         return getReflectionFactory().copyMethod(method);
2931     }
2932 
2933     /**
2934      * Returns the list of {@code Method} objects for the declared public
2935      * methods of this class or interface that have the specified method name
2936      * and parameter types.
2937      *
2938      * @param name the name of the method
2939      * @param parameterTypes the parameter array
2940      * @return the list of {@code Method} objects for the public methods of
2941      *         this class matching the specified name and parameters
2942      */
2943     List<Method> getDeclaredPublicMethods(String name, Class<?>... parameterTypes) {
2944         Method[] methods = privateGetDeclaredMethods(/* publicOnly */ true);
2945         ReflectionFactory factory = getReflectionFactory();
2946         List<Method> result = new ArrayList<>();
2947         for (Method method : methods) {
2948             if (method.getName().equals(name)
2949                 && Arrays.equals(
2950                     factory.getExecutableSharedParameterTypes(method),
2951                     parameterTypes)) {
2952                 result.add(factory.copyMethod(method));
2953             }
2954         }
2955         return result;
2956     }
2957 
2958     /**
2959      * Returns the most specific {@code Method} object of this class, super class or
2960      * interface that have the specified method name and parameter types.
2961      *
2962      * @param publicOnly true if only public methods are examined, otherwise all methods
2963      * @param name the name of the method
2964      * @param parameterTypes the parameter array
2965      * @return the {@code Method} object for the method found from this class matching
2966      * the specified name and parameters, or null if not found
2967      */
2968     Method findMethod(boolean publicOnly, String name, Class<?>... parameterTypes) {
2969         PublicMethods.MethodList res = getMethodsRecursive(name, parameterTypes, true, publicOnly);
2970         return res == null ? null : getReflectionFactory().copyMethod(res.getMostSpecific());
2971     }
2972 
2973     /**
2974      * Returns a {@code Constructor} object that reflects the specified
2975      * constructor of the class represented by this
2976      * {@code Class} object.  The {@code parameterTypes} parameter is
2977      * an array of {@code Class} objects that identify the constructor's
2978      * formal parameter types, in declared order.
2979      *
2980      * If this {@code Class} object represents an inner class
2981      * declared in a non-static context, the formal parameter types
2982      * include the explicit enclosing instance as the first parameter.
2983      *
2984      * @param parameterTypes the parameter array
2985      * @return  The {@code Constructor} object for the constructor with the
2986      *          specified parameter list
2987      * @throws  NoSuchMethodException if a matching constructor is not found,
2988      *          including when this {@code Class} object represents
2989      *          an interface, a primitive type, an array class, or void.
2990      * @throws  SecurityException
2991      *          If a security manager, <i>s</i>, is present and any of the
2992      *          following conditions is met:
2993      *
2994      *          <ul>
2995      *
2996      *          <li> the caller's class loader is not the same as the
2997      *          class loader of this class and invocation of
2998      *          {@link SecurityManager#checkPermission
2999      *          s.checkPermission} method with
3000      *          {@code RuntimePermission("accessDeclaredMembers")}
3001      *          denies access to the declared constructor
3002      *
3003      *          <li> the caller's class loader is not the same as or an
3004      *          ancestor of the class loader for the current class and
3005      *          invocation of {@link SecurityManager#checkPackageAccess
3006      *          s.checkPackageAccess()} denies access to the package
3007      *          of this class
3008      *
3009      *          </ul>
3010      *
3011      * @see #getConstructor(Class<?>[])
3012      * @since 1.1
3013      */
3014     @CallerSensitive
3015     public Constructor<T> getDeclaredConstructor(Class<?>... parameterTypes)
3016         throws NoSuchMethodException, SecurityException
3017     {
3018         @SuppressWarnings("removal")
3019         SecurityManager sm = System.getSecurityManager();
3020         if (sm != null) {
3021             checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
3022         }
3023 
3024         return getReflectionFactory().copyConstructor(
3025             getConstructor0(parameterTypes, Member.DECLARED));
3026     }
3027 
3028     /**
3029      * Finds a resource with a given name.
3030      *
3031      * <p> If this class is in a named {@link Module Module} then this method
3032      * will attempt to find the resource in the module. This is done by
3033      * delegating to the module's class loader {@link
3034      * ClassLoader#findResource(String,String) findResource(String,String)}
3035      * method, invoking it with the module name and the absolute name of the
3036      * resource. Resources in named modules are subject to the rules for
3037      * encapsulation specified in the {@code Module} {@link
3038      * Module#getResourceAsStream getResourceAsStream} method and so this
3039      * method returns {@code null} when the resource is a
3040      * non-"{@code .class}" resource in a package that is not open to the
3041      * caller's module.
3042      *
3043      * <p> Otherwise, if this class is not in a named module then the rules for
3044      * searching resources associated with a given class are implemented by the
3045      * defining {@linkplain ClassLoader class loader} of the class.  This method
3046      * delegates to this {@code Class} object's class loader.
3047      * If this {@code Class} object was loaded by the bootstrap class loader,
3048      * the method delegates to {@link ClassLoader#getSystemResourceAsStream}.
3049      *
3050      * <p> Before delegation, an absolute resource name is constructed from the
3051      * given resource name using this algorithm:
3052      *
3053      * <ul>
3054      *
3055      * <li> If the {@code name} begins with a {@code '/'}
3056      * (<code>'&#92;u002f'</code>), then the absolute name of the resource is the
3057      * portion of the {@code name} following the {@code '/'}.
3058      *
3059      * <li> Otherwise, the absolute name is of the following form:
3060      *
3061      * <blockquote>
3062      *   {@code modified_package_name/name}
3063      * </blockquote>
3064      *
3065      * <p> Where the {@code modified_package_name} is the package name of this
3066      * object with {@code '/'} substituted for {@code '.'}
3067      * (<code>'&#92;u002e'</code>).
3068      *
3069      * </ul>
3070      *
3071      * @param  name name of the desired resource
3072      * @return  A {@link java.io.InputStream} object; {@code null} if no
3073      *          resource with this name is found, the resource is in a package
3074      *          that is not {@linkplain Module#isOpen(String, Module) open} to at
3075      *          least the caller module, or access to the resource is denied
3076      *          by the security manager.
3077      * @throws  NullPointerException If {@code name} is {@code null}
3078      *
3079      * @see Module#getResourceAsStream(String)
3080      * @since  1.1
3081      */
3082     @CallerSensitive
3083     public InputStream getResourceAsStream(String name) {
3084         name = resolveName(name);
3085 
3086         Module thisModule = getModule();
3087         if (thisModule.isNamed()) {
3088             // check if resource can be located by caller
3089             if (Resources.canEncapsulate(name)
3090                 && !isOpenToCaller(name, Reflection.getCallerClass())) {
3091                 return null;
3092             }
3093 
3094             // resource not encapsulated or in package open to caller
3095             String mn = thisModule.getName();
3096             ClassLoader cl = classLoader;
3097             try {
3098 
3099                 // special-case built-in class loaders to avoid the
3100                 // need for a URL connection
3101                 if (cl == null) {
3102                     return BootLoader.findResourceAsStream(mn, name);
3103                 } else if (cl instanceof BuiltinClassLoader bcl) {
3104                     return bcl.findResourceAsStream(mn, name);
3105                 } else {
3106                     URL url = cl.findResource(mn, name);
3107                     return (url != null) ? url.openStream() : null;
3108                 }
3109 
3110             } catch (IOException | SecurityException e) {
3111                 return null;
3112             }
3113         }
3114 
3115         // unnamed module
3116         ClassLoader cl = classLoader;
3117         if (cl == null) {
3118             return ClassLoader.getSystemResourceAsStream(name);
3119         } else {
3120             return cl.getResourceAsStream(name);
3121         }
3122     }
3123 
3124     /**
3125      * Finds a resource with a given name.
3126      *
3127      * <p> If this class is in a named {@link Module Module} then this method
3128      * will attempt to find the resource in the module. This is done by
3129      * delegating to the module's class loader {@link
3130      * ClassLoader#findResource(String,String) findResource(String,String)}
3131      * method, invoking it with the module name and the absolute name of the
3132      * resource. Resources in named modules are subject to the rules for
3133      * encapsulation specified in the {@code Module} {@link
3134      * Module#getResourceAsStream getResourceAsStream} method and so this
3135      * method returns {@code null} when the resource is a
3136      * non-"{@code .class}" resource in a package that is not open to the
3137      * caller's module.
3138      *
3139      * <p> Otherwise, if this class is not in a named module then the rules for
3140      * searching resources associated with a given class are implemented by the
3141      * defining {@linkplain ClassLoader class loader} of the class.  This method
3142      * delegates to this {@code Class} object's class loader.
3143      * If this {@code Class} object was loaded by the bootstrap class loader,
3144      * the method delegates to {@link ClassLoader#getSystemResource}.
3145      *
3146      * <p> Before delegation, an absolute resource name is constructed from the
3147      * given resource name using this algorithm:
3148      *
3149      * <ul>
3150      *
3151      * <li> If the {@code name} begins with a {@code '/'}
3152      * (<code>'&#92;u002f'</code>), then the absolute name of the resource is the
3153      * portion of the {@code name} following the {@code '/'}.
3154      *
3155      * <li> Otherwise, the absolute name is of the following form:
3156      *
3157      * <blockquote>
3158      *   {@code modified_package_name/name}
3159      * </blockquote>
3160      *
3161      * <p> Where the {@code modified_package_name} is the package name of this
3162      * object with {@code '/'} substituted for {@code '.'}
3163      * (<code>'&#92;u002e'</code>).
3164      *
3165      * </ul>
3166      *
3167      * @param  name name of the desired resource
3168      * @return A {@link java.net.URL} object; {@code null} if no resource with
3169      *         this name is found, the resource cannot be located by a URL, the
3170      *         resource is in a package that is not
3171      *         {@linkplain Module#isOpen(String, Module) open} to at least the caller
3172      *         module, or access to the resource is denied by the security
3173      *         manager.
3174      * @throws NullPointerException If {@code name} is {@code null}
3175      * @since  1.1
3176      */
3177     @CallerSensitive
3178     public URL getResource(String name) {
3179         name = resolveName(name);
3180 
3181         Module thisModule = getModule();
3182         if (thisModule.isNamed()) {
3183             // check if resource can be located by caller
3184             if (Resources.canEncapsulate(name)
3185                 && !isOpenToCaller(name, Reflection.getCallerClass())) {
3186                 return null;
3187             }
3188 
3189             // resource not encapsulated or in package open to caller
3190             String mn = thisModule.getName();
3191             ClassLoader cl = classLoader;
3192             try {
3193                 if (cl == null) {
3194                     return BootLoader.findResource(mn, name);
3195                 } else {
3196                     return cl.findResource(mn, name);
3197                 }
3198             } catch (IOException ioe) {
3199                 return null;
3200             }
3201         }
3202 
3203         // unnamed module
3204         ClassLoader cl = classLoader;
3205         if (cl == null) {
3206             return ClassLoader.getSystemResource(name);
3207         } else {
3208             return cl.getResource(name);
3209         }
3210     }
3211 
3212     /**
3213      * Returns true if a resource with the given name can be located by the
3214      * given caller. All resources in a module can be located by code in
3215      * the module. For other callers, then the package needs to be open to
3216      * the caller.
3217      */
3218     private boolean isOpenToCaller(String name, Class<?> caller) {
3219         // assert getModule().isNamed();
3220         Module thisModule = getModule();
3221         Module callerModule = (caller != null) ? caller.getModule() : null;
3222         if (callerModule != thisModule) {
3223             String pn = Resources.toPackageName(name);
3224             if (thisModule.getDescriptor().packages().contains(pn)) {
3225                 if (callerModule == null) {
3226                     // no caller, return true if the package is open to all modules
3227                     return thisModule.isOpen(pn);
3228                 }
3229                 if (!thisModule.isOpen(pn, callerModule)) {
3230                     // package not open to caller
3231                     return false;
3232                 }
3233             }
3234         }
3235         return true;
3236     }
3237 
3238 
3239     /** protection domain returned when the internal domain is null */
3240     private static java.security.ProtectionDomain allPermDomain;
3241 
3242     /**
3243      * Returns the {@code ProtectionDomain} of this class.  If there is a
3244      * security manager installed, this method first calls the security
3245      * manager's {@code checkPermission} method with a
3246      * {@code RuntimePermission("getProtectionDomain")} permission to
3247      * ensure it's ok to get the
3248      * {@code ProtectionDomain}.
3249      *
3250      * @return the ProtectionDomain of this class
3251      *
3252      * @throws SecurityException
3253      *        if a security manager exists and its
3254      *        {@code checkPermission} method doesn't allow
3255      *        getting the ProtectionDomain.
3256      *
3257      * @see java.security.ProtectionDomain
3258      * @see SecurityManager#checkPermission
3259      * @see java.lang.RuntimePermission
3260      * @since 1.2
3261      */
3262     public java.security.ProtectionDomain getProtectionDomain() {
3263         @SuppressWarnings("removal")
3264         SecurityManager sm = System.getSecurityManager();
3265         if (sm != null) {
3266             sm.checkPermission(SecurityConstants.GET_PD_PERMISSION);
3267         }
3268         return protectionDomain();
3269     }
3270 
3271     // package-private
3272     java.security.ProtectionDomain protectionDomain() {
3273         java.security.ProtectionDomain pd = getProtectionDomain0();
3274         if (pd == null) {
3275             if (allPermDomain == null) {
3276                 java.security.Permissions perms =
3277                     new java.security.Permissions();
3278                 perms.add(SecurityConstants.ALL_PERMISSION);
3279                 allPermDomain =
3280                     new java.security.ProtectionDomain(null, perms);
3281             }
3282             pd = allPermDomain;
3283         }
3284         return pd;
3285     }
3286 
3287     /**
3288      * Returns the ProtectionDomain of this class.
3289      */
3290     private native java.security.ProtectionDomain getProtectionDomain0();
3291 
3292     /*
3293      * Return the Virtual Machine's Class object for the named
3294      * primitive type.
3295      */
3296     static native Class<?> getPrimitiveClass(String name);
3297 
3298     /*
3299      * Check if client is allowed to access members.  If access is denied,
3300      * throw a SecurityException.
3301      *
3302      * This method also enforces package access.
3303      *
3304      * <p> Default policy: allow all clients access with normal Java access
3305      * control.
3306      *
3307      * <p> NOTE: should only be called if a SecurityManager is installed
3308      */
3309     private void checkMemberAccess(@SuppressWarnings("removal") SecurityManager sm, int which,
3310                                    Class<?> caller, boolean checkProxyInterfaces) {
3311         /* Default policy allows access to all {@link Member#PUBLIC} members,
3312          * as well as access to classes that have the same class loader as the caller.
3313          * In all other cases, it requires RuntimePermission("accessDeclaredMembers")
3314          * permission.
3315          */
3316         final ClassLoader ccl = ClassLoader.getClassLoader(caller);
3317         if (which != Member.PUBLIC) {
3318             final ClassLoader cl = classLoader;
3319             if (ccl != cl) {
3320                 sm.checkPermission(SecurityConstants.CHECK_MEMBER_ACCESS_PERMISSION);
3321             }
3322         }
3323         this.checkPackageAccess(sm, ccl, checkProxyInterfaces);
3324     }
3325 
3326     /*
3327      * Checks if a client loaded in ClassLoader ccl is allowed to access this
3328      * class under the current package access policy. If access is denied,
3329      * throw a SecurityException.
3330      *
3331      * NOTE: this method should only be called if a SecurityManager is active
3332      */
3333     private void checkPackageAccess(@SuppressWarnings("removal") SecurityManager sm, final ClassLoader ccl,
3334                                     boolean checkProxyInterfaces) {
3335         final ClassLoader cl = classLoader;
3336 
3337         if (ReflectUtil.needsPackageAccessCheck(ccl, cl)) {
3338             String pkg = this.getPackageName();
3339             if (!pkg.isEmpty()) {
3340                 // skip the package access check on a proxy class in default proxy package
3341                 if (!Proxy.isProxyClass(this) || ReflectUtil.isNonPublicProxyClass(this)) {
3342                     sm.checkPackageAccess(pkg);
3343                 }
3344             }
3345         }
3346         // check package access on the proxy interfaces
3347         if (checkProxyInterfaces && Proxy.isProxyClass(this)) {
3348             ReflectUtil.checkProxyPackageAccess(ccl, this.getInterfaces(/* cloneArray */ false));
3349         }
3350     }
3351 
3352     /*
3353      * Checks if a client loaded in ClassLoader ccl is allowed to access the provided
3354      * classes under the current package access policy. If access is denied,
3355      * throw a SecurityException.
3356      *
3357      * NOTE: this method should only be called if a SecurityManager is active
3358      *       classes must be non-empty
3359      *       all classes provided must be loaded by the same ClassLoader
3360      * NOTE: this method does not support Proxy classes
3361      */
3362     private static void checkPackageAccessForPermittedSubclasses(@SuppressWarnings("removal") SecurityManager sm,
3363                                     final ClassLoader ccl, Class<?>[] subClasses) {
3364         final ClassLoader cl = subClasses[0].classLoader;
3365 
3366         if (ReflectUtil.needsPackageAccessCheck(ccl, cl)) {
3367             Set<String> packages = new HashSet<>();
3368 
3369             for (Class<?> c : subClasses) {
3370                 if (Proxy.isProxyClass(c))
3371                     throw new InternalError("a permitted subclass should not be a proxy class: " + c);
3372                 String pkg = c.getPackageName();
3373                 if (!pkg.isEmpty()) {
3374                     packages.add(pkg);
3375                 }
3376             }
3377             for (String pkg : packages) {
3378                 sm.checkPackageAccess(pkg);
3379             }
3380         }
3381     }
3382 
3383     /**
3384      * Add a package name prefix if the name is not absolute. Remove leading "/"
3385      * if name is absolute
3386      */
3387     private String resolveName(String name) {
3388         if (!name.startsWith("/")) {
3389             String baseName = getPackageName();
3390             if (!baseName.isEmpty()) {
3391                 int len = baseName.length() + 1 + name.length();
3392                 StringBuilder sb = new StringBuilder(len);
3393                 name = sb.append(baseName.replace('.', '/'))
3394                     .append('/')
3395                     .append(name)
3396                     .toString();
3397             }
3398         } else {
3399             name = name.substring(1);
3400         }
3401         return name;
3402     }
3403 
3404     /**
3405      * Atomic operations support.
3406      */
3407     private static class Atomic {
3408         // initialize Unsafe machinery here, since we need to call Class.class instance method
3409         // and have to avoid calling it in the static initializer of the Class class...
3410         private static final Unsafe unsafe = Unsafe.getUnsafe();
3411         // offset of Class.reflectionData instance field
3412         private static final long reflectionDataOffset
3413                 = unsafe.objectFieldOffset(Class.class, "reflectionData");
3414         // offset of Class.annotationType instance field
3415         private static final long annotationTypeOffset
3416                 = unsafe.objectFieldOffset(Class.class, "annotationType");
3417         // offset of Class.annotationData instance field
3418         private static final long annotationDataOffset
3419                 = unsafe.objectFieldOffset(Class.class, "annotationData");
3420 
3421         static <T> boolean casReflectionData(Class<?> clazz,
3422                                              ReflectionData<T> oldData,
3423                                              ReflectionData<T> newData) {
3424             return unsafe.compareAndSetReference(clazz, reflectionDataOffset, oldData, newData);
3425         }
3426 
3427         static boolean casAnnotationType(Class<?> clazz,
3428                                          AnnotationType oldType,
3429                                          AnnotationType newType) {
3430             return unsafe.compareAndSetReference(clazz, annotationTypeOffset, oldType, newType);
3431         }
3432 
3433         static boolean casAnnotationData(Class<?> clazz,
3434                                          AnnotationData oldData,
3435                                          AnnotationData newData) {
3436             return unsafe.compareAndSetReference(clazz, annotationDataOffset, oldData, newData);
3437         }
3438     }
3439 
3440     /**
3441      * Reflection support.
3442      */
3443 
3444     // Reflection data caches various derived names and reflective members. Cached
3445     // values may be invalidated when JVM TI RedefineClasses() is called
3446     private static class ReflectionData<T> {
3447         volatile Field[] declaredFields;
3448         volatile Field[] publicFields;
3449         volatile Method[] declaredMethods;
3450         volatile Method[] publicMethods;
3451         volatile Constructor<T>[] declaredConstructors;
3452         volatile Constructor<T>[] publicConstructors;
3453         // Intermediate results for getFields and getMethods
3454         volatile Field[] declaredPublicFields;
3455         volatile Method[] declaredPublicMethods;
3456         volatile Class<?>[] interfaces;
3457 
3458         // Cached names
3459         String simpleName;
3460         String canonicalName;
3461         static final String NULL_SENTINEL = new String();
3462 
3463         // Value of classRedefinedCount when we created this ReflectionData instance
3464         final int redefinedCount;
3465 
3466         ReflectionData(int redefinedCount) {
3467             this.redefinedCount = redefinedCount;
3468         }
3469     }
3470 
3471     private transient volatile ReflectionData<T> reflectionData;
3472 
3473     // Incremented by the VM on each call to JVM TI RedefineClasses()
3474     // that redefines this class or a superclass.
3475     private transient volatile int classRedefinedCount;
3476 
3477     // Lazily create and cache ReflectionData
3478     private ReflectionData<T> reflectionData() {
3479         ReflectionData<T> reflectionData = this.reflectionData;
3480         int classRedefinedCount = this.classRedefinedCount;

3481         if (reflectionData != null &&
3482             reflectionData.redefinedCount == classRedefinedCount) {
3483             return reflectionData;

3484         }
3485         // else no SoftReference or cleared SoftReference or stale ReflectionData
3486         // -> create and replace new instance
3487         return newReflectionData(reflectionData, classRedefinedCount);
3488     }
3489 
3490     private ReflectionData<T> newReflectionData(ReflectionData<T> oldReflectionData,
3491                                                 int classRedefinedCount) {
3492         while (true) {
3493             ReflectionData<T> rd = new ReflectionData<>(classRedefinedCount);
3494             // try to CAS it...
3495             if (Atomic.casReflectionData(this, oldReflectionData, rd)) {
3496                 return rd;
3497             }
3498             // else retry
3499             oldReflectionData = this.reflectionData;
3500             classRedefinedCount = this.classRedefinedCount;
3501             if (oldReflectionData != null && oldReflectionData.redefinedCount == classRedefinedCount) {


3502                 return rd;
3503             }
3504         }
3505     }
3506 
3507     // Generic signature handling
3508     private native String getGenericSignature0();
3509 
3510     // Generic info repository; lazily initialized
3511     private transient volatile ClassRepository genericInfo;
3512 
3513     // accessor for factory
3514     private GenericsFactory getFactory() {
3515         // create scope and factory
3516         return CoreReflectionFactory.make(this, ClassScope.make(this));
3517     }
3518 
3519     // accessor for generic info repository;
3520     // generic info is lazily initialized
3521     private ClassRepository getGenericInfo() {
3522         ClassRepository genericInfo = this.genericInfo;
3523         if (genericInfo == null) {
3524             String signature = getGenericSignature0();
3525             if (signature == null) {
3526                 genericInfo = ClassRepository.NONE;
3527             } else {
3528                 genericInfo = ClassRepository.make(signature, getFactory());
3529             }
3530             this.genericInfo = genericInfo;
3531         }
3532         return (genericInfo != ClassRepository.NONE) ? genericInfo : null;
3533     }
3534 
3535     // Annotations handling
3536     native byte[] getRawAnnotations();
3537     // Since 1.8
3538     native byte[] getRawTypeAnnotations();
3539     static byte[] getExecutableTypeAnnotationBytes(Executable ex) {
3540         return getReflectionFactory().getExecutableTypeAnnotationBytes(ex);
3541     }
3542 
3543     native ConstantPool getConstantPool();
3544 
3545     //
3546     //
3547     // java.lang.reflect.Field handling
3548     //
3549     //
3550 
3551     // Returns an array of "root" fields. These Field objects must NOT
3552     // be propagated to the outside world, but must instead be copied
3553     // via ReflectionFactory.copyField.
3554     private Field[] privateGetDeclaredFields(boolean publicOnly) {
3555         Field[] res;
3556         ReflectionData<T> rd = reflectionData();
3557         if (rd != null) {
3558             res = publicOnly ? rd.declaredPublicFields : rd.declaredFields;
3559             if (res != null) return res;
3560         }
3561         // No cached value available; request value from VM
3562         res = Reflection.filterFields(this, getDeclaredFields0(publicOnly));
3563         if (rd != null) {
3564             if (publicOnly) {
3565                 rd.declaredPublicFields = res;
3566             } else {
3567                 rd.declaredFields = res;
3568             }
3569         }
3570         return res;
3571     }
3572 
3573     // Returns an array of "root" fields. These Field objects must NOT
3574     // be propagated to the outside world, but must instead be copied
3575     // via ReflectionFactory.copyField.
3576     private Field[] privateGetPublicFields() {
3577         Field[] res;
3578         ReflectionData<T> rd = reflectionData();
3579         if (rd != null) {
3580             res = rd.publicFields;
3581             if (res != null) return res;
3582         }
3583 
3584         // Use a linked hash set to ensure order is preserved and
3585         // fields from common super interfaces are not duplicated
3586         LinkedHashSet<Field> fields = new LinkedHashSet<>();
3587 
3588         // Local fields
3589         addAll(fields, privateGetDeclaredFields(true));
3590 
3591         // Direct superinterfaces, recursively
3592         for (Class<?> si : getInterfaces(/* cloneArray */ false)) {
3593             addAll(fields, si.privateGetPublicFields());
3594         }
3595 
3596         // Direct superclass, recursively
3597         Class<?> sc = getSuperclass();
3598         if (sc != null) {
3599             addAll(fields, sc.privateGetPublicFields());
3600         }
3601 
3602         res = fields.toArray(new Field[0]);
3603         if (rd != null) {
3604             rd.publicFields = res;
3605         }
3606         return res;
3607     }
3608 
3609     private static void addAll(Collection<Field> c, Field[] o) {
3610         for (Field f : o) {
3611             c.add(f);
3612         }
3613     }
3614 
3615 
3616     //
3617     //
3618     // java.lang.reflect.Constructor handling
3619     //
3620     //
3621 
3622     // Returns an array of "root" constructors. These Constructor
3623     // objects must NOT be propagated to the outside world, but must
3624     // instead be copied via ReflectionFactory.copyConstructor.
3625     private Constructor<T>[] privateGetDeclaredConstructors(boolean publicOnly) {
3626         Constructor<T>[] res;
3627         ReflectionData<T> rd = reflectionData();
3628         if (rd != null) {
3629             res = publicOnly ? rd.publicConstructors : rd.declaredConstructors;
3630             if (res != null) return res;
3631         }
3632         // No cached value available; request value from VM
3633         if (isInterface()) {
3634             @SuppressWarnings("unchecked")
3635             Constructor<T>[] temporaryRes = (Constructor<T>[]) new Constructor<?>[0];
3636             res = temporaryRes;
3637         } else {
3638             res = getDeclaredConstructors0(publicOnly);
3639         }
3640         if (rd != null) {
3641             if (publicOnly) {
3642                 rd.publicConstructors = res;
3643             } else {
3644                 rd.declaredConstructors = res;
3645             }
3646         }
3647         return res;
3648     }
3649 
3650     //
3651     //
3652     // java.lang.reflect.Method handling
3653     //
3654     //
3655 
3656     // Returns an array of "root" methods. These Method objects must NOT
3657     // be propagated to the outside world, but must instead be copied
3658     // via ReflectionFactory.copyMethod.
3659     private Method[] privateGetDeclaredMethods(boolean publicOnly) {
3660         Method[] res;
3661         ReflectionData<T> rd = reflectionData();
3662         if (rd != null) {
3663             res = publicOnly ? rd.declaredPublicMethods : rd.declaredMethods;
3664             if (res != null) return res;
3665         }
3666         // No cached value available; request value from VM
3667         res = Reflection.filterMethods(this, getDeclaredMethods0(publicOnly));
3668         if (rd != null) {
3669             if (publicOnly) {
3670                 rd.declaredPublicMethods = res;
3671             } else {
3672                 rd.declaredMethods = res;
3673             }
3674         }
3675         return res;
3676     }
3677 
3678     // Returns an array of "root" methods. These Method objects must NOT
3679     // be propagated to the outside world, but must instead be copied
3680     // via ReflectionFactory.copyMethod.
3681     private Method[] privateGetPublicMethods() {
3682         Method[] res;
3683         ReflectionData<T> rd = reflectionData();
3684         if (rd != null) {
3685             res = rd.publicMethods;
3686             if (res != null) return res;
3687         }
3688 
3689         // No cached value available; compute value recursively.
3690         // Start by fetching public declared methods...
3691         PublicMethods pms = new PublicMethods();
3692         for (Method m : privateGetDeclaredMethods(/* publicOnly */ true)) {
3693             pms.merge(m);
3694         }
3695         // ...then recur over superclass methods...
3696         Class<?> sc = getSuperclass();
3697         if (sc != null) {
3698             for (Method m : sc.privateGetPublicMethods()) {
3699                 pms.merge(m);
3700             }
3701         }
3702         // ...and finally over direct superinterfaces.
3703         for (Class<?> intf : getInterfaces(/* cloneArray */ false)) {
3704             for (Method m : intf.privateGetPublicMethods()) {
3705                 // static interface methods are not inherited
3706                 if (!Modifier.isStatic(m.getModifiers())) {
3707                     pms.merge(m);
3708                 }
3709             }
3710         }
3711 
3712         res = pms.toArray();
3713         if (rd != null) {
3714             rd.publicMethods = res;
3715         }
3716         return res;
3717     }
3718 
3719 
3720     //
3721     // Helpers for fetchers of one field, method, or constructor
3722     //
3723 
3724     // This method does not copy the returned Field object!
3725     private static Field searchFields(Field[] fields, String name) {
3726         for (Field field : fields) {
3727             if (field.getName().equals(name)) {
3728                 return field;
3729             }
3730         }
3731         return null;
3732     }
3733 
3734     // Returns a "root" Field object. This Field object must NOT
3735     // be propagated to the outside world, but must instead be copied
3736     // via ReflectionFactory.copyField.
3737     private Field getField0(String name) {
3738         // Note: the intent is that the search algorithm this routine
3739         // uses be equivalent to the ordering imposed by
3740         // privateGetPublicFields(). It fetches only the declared
3741         // public fields for each class, however, to reduce the number
3742         // of Field objects which have to be created for the common
3743         // case where the field being requested is declared in the
3744         // class which is being queried.
3745         Field res;
3746         // Search declared public fields
3747         if ((res = searchFields(privateGetDeclaredFields(true), name)) != null) {
3748             return res;
3749         }
3750         // Direct superinterfaces, recursively
3751         Class<?>[] interfaces = getInterfaces(/* cloneArray */ false);
3752         for (Class<?> c : interfaces) {
3753             if ((res = c.getField0(name)) != null) {
3754                 return res;
3755             }
3756         }
3757         // Direct superclass, recursively
3758         if (!isInterface()) {
3759             Class<?> c = getSuperclass();
3760             if (c != null) {
3761                 if ((res = c.getField0(name)) != null) {
3762                     return res;
3763                 }
3764             }
3765         }
3766         return null;
3767     }
3768 
3769     // This method does not copy the returned Method object!
3770     private static Method searchMethods(Method[] methods,
3771                                         String name,
3772                                         Class<?>[] parameterTypes)
3773     {
3774         ReflectionFactory fact = getReflectionFactory();
3775         Method res = null;
3776         for (Method m : methods) {
3777             if (m.getName().equals(name)
3778                 && arrayContentsEq(parameterTypes,
3779                                    fact.getExecutableSharedParameterTypes(m))
3780                 && (res == null
3781                     || (res.getReturnType() != m.getReturnType()
3782                         && res.getReturnType().isAssignableFrom(m.getReturnType()))))
3783                 res = m;
3784         }
3785         return res;
3786     }
3787 
3788     private static final Class<?>[] EMPTY_CLASS_ARRAY = new Class<?>[0];
3789 
3790     // Returns a "root" Method object. This Method object must NOT
3791     // be propagated to the outside world, but must instead be copied
3792     // via ReflectionFactory.copyMethod.
3793     private Method getMethod0(String name, Class<?>[] parameterTypes) {
3794         PublicMethods.MethodList res = getMethodsRecursive(
3795             name,
3796             parameterTypes == null ? EMPTY_CLASS_ARRAY : parameterTypes,
3797             /* includeStatic */ true, /* publicOnly */ true);
3798         return res == null ? null : res.getMostSpecific();
3799     }
3800 
3801     // Returns a list of "root" Method objects. These Method objects must NOT
3802     // be propagated to the outside world, but must instead be copied
3803     // via ReflectionFactory.copyMethod.
3804     private PublicMethods.MethodList getMethodsRecursive(String name,
3805                                                          Class<?>[] parameterTypes,
3806                                                          boolean includeStatic,
3807                                                          boolean publicOnly) {
3808         // 1st check declared methods
3809         Method[] methods = privateGetDeclaredMethods(publicOnly);
3810         PublicMethods.MethodList res = PublicMethods.MethodList
3811             .filter(methods, name, parameterTypes, includeStatic);
3812         // if there is at least one match among declared methods, we need not
3813         // search any further as such match surely overrides matching methods
3814         // declared in superclass(es) or interface(s).
3815         if (res != null) {
3816             return res;
3817         }
3818 
3819         // if there was no match among declared methods,
3820         // we must consult the superclass (if any) recursively...
3821         Class<?> sc = getSuperclass();
3822         if (sc != null) {
3823             res = sc.getMethodsRecursive(name, parameterTypes, includeStatic, publicOnly);
3824         }
3825 
3826         // ...and coalesce the superclass methods with methods obtained
3827         // from directly implemented interfaces excluding static methods...
3828         for (Class<?> intf : getInterfaces(/* cloneArray */ false)) {
3829             res = PublicMethods.MethodList.merge(
3830                 res, intf.getMethodsRecursive(name, parameterTypes, /* includeStatic */ false, publicOnly));
3831         }
3832 
3833         return res;
3834     }
3835 
3836     // Returns a "root" Constructor object. This Constructor object must NOT
3837     // be propagated to the outside world, but must instead be copied
3838     // via ReflectionFactory.copyConstructor.
3839     private Constructor<T> getConstructor0(Class<?>[] parameterTypes,
3840                                         int which) throws NoSuchMethodException
3841     {
3842         ReflectionFactory fact = getReflectionFactory();
3843         Constructor<T>[] constructors = privateGetDeclaredConstructors((which == Member.PUBLIC));
3844         for (Constructor<T> constructor : constructors) {
3845             if (arrayContentsEq(parameterTypes,
3846                                 fact.getExecutableSharedParameterTypes(constructor))) {
3847                 return constructor;
3848             }
3849         }
3850         throw new NoSuchMethodException(methodToString("<init>", parameterTypes));
3851     }
3852 
3853     //
3854     // Other helpers and base implementation
3855     //
3856 
3857     private static boolean arrayContentsEq(Object[] a1, Object[] a2) {
3858         if (a1 == null) {
3859             return a2 == null || a2.length == 0;
3860         }
3861 
3862         if (a2 == null) {
3863             return a1.length == 0;
3864         }
3865 
3866         if (a1.length != a2.length) {
3867             return false;
3868         }
3869 
3870         for (int i = 0; i < a1.length; i++) {
3871             if (a1[i] != a2[i]) {
3872                 return false;
3873             }
3874         }
3875 
3876         return true;
3877     }
3878 
3879     private static Field[] copyFields(Field[] arg) {
3880         Field[] out = new Field[arg.length];
3881         ReflectionFactory fact = getReflectionFactory();
3882         for (int i = 0; i < arg.length; i++) {
3883             out[i] = fact.copyField(arg[i]);
3884         }
3885         return out;
3886     }
3887 
3888     private static Method[] copyMethods(Method[] arg) {
3889         Method[] out = new Method[arg.length];
3890         ReflectionFactory fact = getReflectionFactory();
3891         for (int i = 0; i < arg.length; i++) {
3892             out[i] = fact.copyMethod(arg[i]);
3893         }
3894         return out;
3895     }
3896 
3897     private static <U> Constructor<U>[] copyConstructors(Constructor<U>[] arg) {
3898         Constructor<U>[] out = arg.clone();
3899         ReflectionFactory fact = getReflectionFactory();
3900         for (int i = 0; i < out.length; i++) {
3901             out[i] = fact.copyConstructor(out[i]);
3902         }
3903         return out;
3904     }
3905 
3906     private native Field[]       getDeclaredFields0(boolean publicOnly);
3907     private native Method[]      getDeclaredMethods0(boolean publicOnly);
3908     private native Constructor<T>[] getDeclaredConstructors0(boolean publicOnly);
3909     private native Class<?>[]    getDeclaredClasses0();
3910 
3911     /*
3912      * Returns an array containing the components of the Record attribute,
3913      * or null if the attribute is not present.
3914      *
3915      * Note that this method returns non-null array on a class with
3916      * the Record attribute even if this class is not a record.
3917      */
3918     private native RecordComponent[] getRecordComponents0();
3919     private native boolean       isRecord0();
3920 
3921     /**
3922      * Helper method to get the method name from arguments.
3923      */
3924     private String methodToString(String name, Class<?>[] argTypes) {
3925         return getName() + '.' + name +
3926                 ((argTypes == null || argTypes.length == 0) ?
3927                 "()" :
3928                 Arrays.stream(argTypes)
3929                         .map(c -> c == null ? "null" : c.getName())
3930                         .collect(Collectors.joining(",", "(", ")")));
3931     }
3932 
3933     /** use serialVersionUID from JDK 1.1 for interoperability */
3934     @java.io.Serial
3935     private static final long serialVersionUID = 3206093459760846163L;
3936 
3937 
3938     /**
3939      * Class Class is special cased within the Serialization Stream Protocol.
3940      *
3941      * A Class instance is written initially into an ObjectOutputStream in the
3942      * following format:
3943      * <pre>
3944      *      {@code TC_CLASS} ClassDescriptor
3945      *      A ClassDescriptor is a special cased serialization of
3946      *      a {@code java.io.ObjectStreamClass} instance.
3947      * </pre>
3948      * A new handle is generated for the initial time the class descriptor
3949      * is written into the stream. Future references to the class descriptor
3950      * are written as references to the initial class descriptor instance.
3951      *
3952      * @see java.io.ObjectStreamClass
3953      */
3954     @java.io.Serial
3955     private static final ObjectStreamField[] serialPersistentFields =
3956         new ObjectStreamField[0];
3957 
3958 
3959     /**
3960      * Returns the assertion status that would be assigned to this
3961      * class if it were to be initialized at the time this method is invoked.
3962      * If this class has had its assertion status set, the most recent
3963      * setting will be returned; otherwise, if any package default assertion
3964      * status pertains to this class, the most recent setting for the most
3965      * specific pertinent package default assertion status is returned;
3966      * otherwise, if this class is not a system class (i.e., it has a
3967      * class loader) its class loader's default assertion status is returned;
3968      * otherwise, the system class default assertion status is returned.
3969      *
3970      * @apiNote
3971      * Few programmers will have any need for this method; it is provided
3972      * for the benefit of the JDK itself.  (It allows a class to determine at
3973      * the time that it is initialized whether assertions should be enabled.)
3974      * Note that this method is not guaranteed to return the actual
3975      * assertion status that was (or will be) associated with the specified
3976      * class when it was (or will be) initialized.
3977      *
3978      * @return the desired assertion status of the specified class.
3979      * @see    java.lang.ClassLoader#setClassAssertionStatus
3980      * @see    java.lang.ClassLoader#setPackageAssertionStatus
3981      * @see    java.lang.ClassLoader#setDefaultAssertionStatus
3982      * @since  1.4
3983      */
3984     public boolean desiredAssertionStatus() {
3985         ClassLoader loader = classLoader;
3986         // If the loader is null this is a system class, so ask the VM
3987         if (loader == null)
3988             return desiredAssertionStatus0(this);
3989 
3990         // If the classloader has been initialized with the assertion
3991         // directives, ask it. Otherwise, ask the VM.
3992         synchronized(loader.assertionLock) {
3993             if (loader.classAssertionStatus != null) {
3994                 return loader.desiredAssertionStatus(getName());
3995             }
3996         }
3997         return desiredAssertionStatus0(this);
3998     }
3999 
4000     // Retrieves the desired assertion status of this class from the VM
4001     private static native boolean desiredAssertionStatus0(Class<?> clazz);
4002 
4003     /**
4004      * Returns true if and only if this class was declared as an enum in the
4005      * source code.
4006      *
4007      * Note that {@link java.lang.Enum} is not itself an enum class.
4008      *
4009      * Also note that if an enum constant is declared with a class body,
4010      * the class of that enum constant object is an anonymous class
4011      * and <em>not</em> the class of the declaring enum class. The
4012      * {@link Enum#getDeclaringClass} method of an enum constant can
4013      * be used to get the class of the enum class declaring the
4014      * constant.
4015      *
4016      * @return true if and only if this class was declared as an enum in the
4017      *     source code
4018      * @since 1.5
4019      * @jls 8.9.1 Enum Constants
4020      */
4021     public boolean isEnum() {
4022         // An enum must both directly extend java.lang.Enum and have
4023         // the ENUM bit set; classes for specialized enum constants
4024         // don't do the former.
4025         return (this.getModifiers() & ENUM) != 0 &&
4026         this.getSuperclass() == java.lang.Enum.class;
4027     }
4028 
4029     /**
4030      * Returns {@code true} if and only if this class is a record class.
4031      *
4032      * <p> The {@linkplain #getSuperclass() direct superclass} of a record
4033      * class is {@code java.lang.Record}. A record class is {@linkplain
4034      * Modifier#FINAL final}. A record class has (possibly zero) record
4035      * components; {@link #getRecordComponents()} returns a non-null but
4036      * possibly empty value for a record.
4037      *
4038      * <p> Note that class {@link Record} is not a record class and thus
4039      * invoking this method on class {@code Record} returns {@code false}.
4040      *
4041      * @return true if and only if this class is a record class, otherwise false
4042      * @jls 8.10 Record Classes
4043      * @since 16
4044      */
4045     public boolean isRecord() {
4046         // this superclass and final modifier check is not strictly necessary
4047         // they are intrinsified and serve as a fast-path check
4048         return getSuperclass() == java.lang.Record.class &&
4049                 (this.getModifiers() & Modifier.FINAL) != 0 &&
4050                 isRecord0();
4051     }
4052 
4053     // Fetches the factory for reflective objects
4054     @SuppressWarnings("removal")
4055     private static ReflectionFactory getReflectionFactory() {
4056         var factory = reflectionFactory;
4057         if (factory != null) {
4058             return factory;
4059         }
4060         return reflectionFactory =
4061                 java.security.AccessController.doPrivileged
4062                         (new ReflectionFactory.GetReflectionFactoryAction());
4063     }
4064     private static ReflectionFactory reflectionFactory;
4065 
4066     /**
4067      * Returns the elements of this enum class or null if this
4068      * Class object does not represent an enum class.
4069      *
4070      * @return an array containing the values comprising the enum class
4071      *     represented by this {@code Class} object in the order they're
4072      *     declared, or null if this {@code Class} object does not
4073      *     represent an enum class
4074      * @since 1.5
4075      * @jls 8.9.1 Enum Constants
4076      */
4077     public T[] getEnumConstants() {
4078         T[] values = getEnumConstantsShared();
4079         return (values != null) ? values.clone() : null;
4080     }
4081 
4082     /**
4083      * Returns the elements of this enum class or null if this
4084      * Class object does not represent an enum class;
4085      * identical to getEnumConstants except that the result is
4086      * uncloned, cached, and shared by all callers.
4087      */
4088     @SuppressWarnings("removal")
4089     T[] getEnumConstantsShared() {
4090         T[] constants = enumConstants;
4091         if (constants == null) {
4092             if (!isEnum()) return null;
4093             try {
4094                 final Method values = getMethod("values");
4095                 java.security.AccessController.doPrivileged(
4096                     new java.security.PrivilegedAction<>() {
4097                         public Void run() {
4098                                 values.setAccessible(true);
4099                                 return null;
4100                             }
4101                         });
4102                 @SuppressWarnings("unchecked")
4103                 T[] temporaryConstants = (T[])values.invoke(null);
4104                 enumConstants = constants = temporaryConstants;
4105             }
4106             // These can happen when users concoct enum-like classes
4107             // that don't comply with the enum spec.
4108             catch (InvocationTargetException | NoSuchMethodException |
4109                    IllegalAccessException | NullPointerException |
4110                    ClassCastException ex) { return null; }
4111         }
4112         return constants;
4113     }
4114     private transient volatile T[] enumConstants;
4115 
4116     /**
4117      * Returns a map from simple name to enum constant.  This package-private
4118      * method is used internally by Enum to implement
4119      * {@code public static <T extends Enum<T>> T valueOf(Class<T>, String)}
4120      * efficiently.  Note that the map is returned by this method is
4121      * created lazily on first use.  Typically it won't ever get created.
4122      */
4123     Map<String, T> enumConstantDirectory() {
4124         Map<String, T> directory = enumConstantDirectory;
4125         if (directory == null) {
4126             T[] universe = getEnumConstantsShared();
4127             if (universe == null)
4128                 throw new IllegalArgumentException(
4129                     getName() + " is not an enum class");
4130             directory = HashMap.newHashMap(universe.length);
4131             for (T constant : universe) {
4132                 directory.put(((Enum<?>)constant).name(), constant);
4133             }
4134             enumConstantDirectory = directory;
4135         }
4136         return directory;
4137     }
4138     private transient volatile Map<String, T> enumConstantDirectory;
4139 
4140     /**
4141      * Casts an object to the class or interface represented
4142      * by this {@code Class} object.
4143      *
4144      * @param obj the object to be cast
4145      * @return the object after casting, or null if obj is null
4146      *
4147      * @throws ClassCastException if the object is not
4148      * null and is not assignable to the type T.
4149      *
4150      * @since 1.5
4151      */
4152     @SuppressWarnings("unchecked")
4153     @IntrinsicCandidate
4154     public T cast(Object obj) {
4155         if (obj != null && !isInstance(obj))
4156             throw new ClassCastException(cannotCastMsg(obj));
4157         return (T) obj;
4158     }
4159 
4160     private String cannotCastMsg(Object obj) {
4161         return "Cannot cast " + obj.getClass().getName() + " to " + getName();
4162     }
4163 
4164     /**
4165      * Casts this {@code Class} object to represent a subclass of the class
4166      * represented by the specified class object.  Checks that the cast
4167      * is valid, and throws a {@code ClassCastException} if it is not.  If
4168      * this method succeeds, it always returns a reference to this {@code Class} object.
4169      *
4170      * <p>This method is useful when a client needs to "narrow" the type of
4171      * a {@code Class} object to pass it to an API that restricts the
4172      * {@code Class} objects that it is willing to accept.  A cast would
4173      * generate a compile-time warning, as the correctness of the cast
4174      * could not be checked at runtime (because generic types are implemented
4175      * by erasure).
4176      *
4177      * @param <U> the type to cast this {@code Class} object to
4178      * @param clazz the class of the type to cast this {@code Class} object to
4179      * @return this {@code Class} object, cast to represent a subclass of
4180      *    the specified class object.
4181      * @throws ClassCastException if this {@code Class} object does not
4182      *    represent a subclass of the specified class (here "subclass" includes
4183      *    the class itself).
4184      * @since 1.5
4185      */
4186     @SuppressWarnings("unchecked")
4187     public <U> Class<? extends U> asSubclass(Class<U> clazz) {
4188         if (clazz.isAssignableFrom(this))
4189             return (Class<? extends U>) this;
4190         else
4191             throw new ClassCastException(this.toString());
4192     }
4193 
4194     /**
4195      * {@inheritDoc}
4196      * <p>Note that any annotation returned by this method is a
4197      * declaration annotation.
4198      *
4199      * @throws NullPointerException {@inheritDoc}
4200      * @since 1.5
4201      */
4202     @Override
4203     @SuppressWarnings("unchecked")
4204     public <A extends Annotation> A getAnnotation(Class<A> annotationClass) {
4205         Objects.requireNonNull(annotationClass);
4206 
4207         return (A) annotationData().annotations.get(annotationClass);
4208     }
4209 
4210     /**
4211      * {@inheritDoc}
4212      * @throws NullPointerException {@inheritDoc}
4213      * @since 1.5
4214      */
4215     @Override
4216     public boolean isAnnotationPresent(Class<? extends Annotation> annotationClass) {
4217         return GenericDeclaration.super.isAnnotationPresent(annotationClass);
4218     }
4219 
4220     /**
4221      * {@inheritDoc}
4222      * <p>Note that any annotations returned by this method are
4223      * declaration annotations.
4224      *
4225      * @throws NullPointerException {@inheritDoc}
4226      * @since 1.8
4227      */
4228     @Override
4229     public <A extends Annotation> A[] getAnnotationsByType(Class<A> annotationClass) {
4230         Objects.requireNonNull(annotationClass);
4231 
4232         AnnotationData annotationData = annotationData();
4233         return AnnotationSupport.getAssociatedAnnotations(annotationData.declaredAnnotations,
4234                                                           this,
4235                                                           annotationClass);
4236     }
4237 
4238     /**
4239      * {@inheritDoc}
4240      * <p>Note that any annotations returned by this method are
4241      * declaration annotations.
4242      *
4243      * @since 1.5
4244      */
4245     @Override
4246     public Annotation[] getAnnotations() {
4247         return AnnotationParser.toArray(annotationData().annotations);
4248     }
4249 
4250     /**
4251      * {@inheritDoc}
4252      * <p>Note that any annotation returned by this method is a
4253      * declaration annotation.
4254      *
4255      * @throws NullPointerException {@inheritDoc}
4256      * @since 1.8
4257      */
4258     @Override
4259     @SuppressWarnings("unchecked")
4260     public <A extends Annotation> A getDeclaredAnnotation(Class<A> annotationClass) {
4261         Objects.requireNonNull(annotationClass);
4262 
4263         return (A) annotationData().declaredAnnotations.get(annotationClass);
4264     }
4265 
4266     /**
4267      * {@inheritDoc}
4268      * <p>Note that any annotations returned by this method are
4269      * declaration annotations.
4270      *
4271      * @throws NullPointerException {@inheritDoc}
4272      * @since 1.8
4273      */
4274     @Override
4275     public <A extends Annotation> A[] getDeclaredAnnotationsByType(Class<A> annotationClass) {
4276         Objects.requireNonNull(annotationClass);
4277 
4278         return AnnotationSupport.getDirectlyAndIndirectlyPresent(annotationData().declaredAnnotations,
4279                                                                  annotationClass);
4280     }
4281 
4282     /**
4283      * {@inheritDoc}
4284      * <p>Note that any annotations returned by this method are
4285      * declaration annotations.
4286      *
4287      * @since 1.5
4288      */
4289     @Override
4290     public Annotation[] getDeclaredAnnotations()  {
4291         return AnnotationParser.toArray(annotationData().declaredAnnotations);
4292     }
4293 
4294     // annotation data that might get invalidated when JVM TI RedefineClasses() is called
4295     private static class AnnotationData {
4296         final Map<Class<? extends Annotation>, Annotation> annotations;
4297         final Map<Class<? extends Annotation>, Annotation> declaredAnnotations;
4298 
4299         // Value of classRedefinedCount when we created this AnnotationData instance
4300         final int redefinedCount;
4301 
4302         AnnotationData(Map<Class<? extends Annotation>, Annotation> annotations,
4303                        Map<Class<? extends Annotation>, Annotation> declaredAnnotations,
4304                        int redefinedCount) {
4305             this.annotations = annotations;
4306             this.declaredAnnotations = declaredAnnotations;
4307             this.redefinedCount = redefinedCount;
4308         }
4309     }
4310 
4311     // Annotations cache
4312     @SuppressWarnings("UnusedDeclaration")
4313     private transient volatile AnnotationData annotationData;
4314 
4315     private AnnotationData annotationData() {
4316         while (true) { // retry loop
4317             AnnotationData annotationData = this.annotationData;
4318             int classRedefinedCount = this.classRedefinedCount;
4319             if (annotationData != null &&
4320                 annotationData.redefinedCount == classRedefinedCount) {
4321                 return annotationData;
4322             }
4323             // null or stale annotationData -> optimistically create new instance
4324             AnnotationData newAnnotationData = createAnnotationData(classRedefinedCount);
4325             // try to install it
4326             if (Atomic.casAnnotationData(this, annotationData, newAnnotationData)) {
4327                 // successfully installed new AnnotationData
4328                 return newAnnotationData;
4329             }
4330         }
4331     }
4332 
4333     private AnnotationData createAnnotationData(int classRedefinedCount) {
4334         Map<Class<? extends Annotation>, Annotation> declaredAnnotations =
4335             AnnotationParser.parseAnnotations(getRawAnnotations(), getConstantPool(), this);
4336         Class<?> superClass = getSuperclass();
4337         Map<Class<? extends Annotation>, Annotation> annotations = null;
4338         if (superClass != null) {
4339             Map<Class<? extends Annotation>, Annotation> superAnnotations =
4340                 superClass.annotationData().annotations;
4341             for (Map.Entry<Class<? extends Annotation>, Annotation> e : superAnnotations.entrySet()) {
4342                 Class<? extends Annotation> annotationClass = e.getKey();
4343                 if (AnnotationType.getInstance(annotationClass).isInherited()) {
4344                     if (annotations == null) { // lazy construction
4345                         annotations = LinkedHashMap.newLinkedHashMap(Math.max(
4346                                 declaredAnnotations.size(),
4347                                 Math.min(12, declaredAnnotations.size() + superAnnotations.size())
4348                             )
4349                         );
4350                     }
4351                     annotations.put(annotationClass, e.getValue());
4352                 }
4353             }
4354         }
4355         if (annotations == null) {
4356             // no inherited annotations -> share the Map with declaredAnnotations
4357             annotations = declaredAnnotations;
4358         } else {
4359             // at least one inherited annotation -> declared may override inherited
4360             annotations.putAll(declaredAnnotations);
4361         }
4362         return new AnnotationData(annotations, declaredAnnotations, classRedefinedCount);
4363     }
4364 
4365     // Annotation interfaces cache their internal (AnnotationType) form
4366 
4367     @SuppressWarnings("UnusedDeclaration")
4368     private transient volatile AnnotationType annotationType;
4369 
4370     boolean casAnnotationType(AnnotationType oldType, AnnotationType newType) {
4371         return Atomic.casAnnotationType(this, oldType, newType);
4372     }
4373 
4374     AnnotationType getAnnotationType() {
4375         return annotationType;
4376     }
4377 
4378     Map<Class<? extends Annotation>, Annotation> getDeclaredAnnotationMap() {
4379         return annotationData().declaredAnnotations;
4380     }
4381 
4382     /* Backing store of user-defined values pertaining to this class.
4383      * Maintained by the ClassValue class.
4384      */
4385     transient ClassValue.ClassValueMap classValueMap;
4386 
4387     /**
4388      * Returns an {@code AnnotatedType} object that represents the use of a
4389      * type to specify the superclass of the entity represented by this {@code
4390      * Class} object. (The <em>use</em> of type Foo to specify the superclass
4391      * in '...  extends Foo' is distinct from the <em>declaration</em> of class
4392      * Foo.)
4393      *
4394      * <p> If this {@code Class} object represents a class whose declaration
4395      * does not explicitly indicate an annotated superclass, then the return
4396      * value is an {@code AnnotatedType} object representing an element with no
4397      * annotations.
4398      *
4399      * <p> If this {@code Class} represents either the {@code Object} class, an
4400      * interface type, an array type, a primitive type, or void, the return
4401      * value is {@code null}.
4402      *
4403      * @return an object representing the superclass
4404      * @since 1.8
4405      */
4406     public AnnotatedType getAnnotatedSuperclass() {
4407         if (this == Object.class ||
4408                 isInterface() ||
4409                 isArray() ||
4410                 isPrimitive() ||
4411                 this == Void.TYPE) {
4412             return null;
4413         }
4414 
4415         return TypeAnnotationParser.buildAnnotatedSuperclass(getRawTypeAnnotations(), getConstantPool(), this);
4416     }
4417 
4418     /**
4419      * Returns an array of {@code AnnotatedType} objects that represent the use
4420      * of types to specify superinterfaces of the entity represented by this
4421      * {@code Class} object. (The <em>use</em> of type Foo to specify a
4422      * superinterface in '... implements Foo' is distinct from the
4423      * <em>declaration</em> of interface Foo.)
4424      *
4425      * <p> If this {@code Class} object represents a class, the return value is
4426      * an array containing objects representing the uses of interface types to
4427      * specify interfaces implemented by the class. The order of the objects in
4428      * the array corresponds to the order of the interface types used in the
4429      * 'implements' clause of the declaration of this {@code Class} object.
4430      *
4431      * <p> If this {@code Class} object represents an interface, the return
4432      * value is an array containing objects representing the uses of interface
4433      * types to specify interfaces directly extended by the interface. The
4434      * order of the objects in the array corresponds to the order of the
4435      * interface types used in the 'extends' clause of the declaration of this
4436      * {@code Class} object.
4437      *
4438      * <p> If this {@code Class} object represents a class or interface whose
4439      * declaration does not explicitly indicate any annotated superinterfaces,
4440      * the return value is an array of length 0.
4441      *
4442      * <p> If this {@code Class} object represents either the {@code Object}
4443      * class, an array type, a primitive type, or void, the return value is an
4444      * array of length 0.
4445      *
4446      * @return an array representing the superinterfaces
4447      * @since 1.8
4448      */
4449     public AnnotatedType[] getAnnotatedInterfaces() {
4450          return TypeAnnotationParser.buildAnnotatedInterfaces(getRawTypeAnnotations(), getConstantPool(), this);
4451     }
4452 
4453     private native Class<?> getNestHost0();
4454 
4455     /**
4456      * Returns the nest host of the <a href=#nest>nest</a> to which the class
4457      * or interface represented by this {@code Class} object belongs.
4458      * Every class and interface belongs to exactly one nest.
4459      *
4460      * If the nest host of this class or interface has previously
4461      * been determined, then this method returns the nest host.
4462      * If the nest host of this class or interface has
4463      * not previously been determined, then this method determines the nest
4464      * host using the algorithm of JVMS 5.4.4, and returns it.
4465      *
4466      * Often, a class or interface belongs to a nest consisting only of itself,
4467      * in which case this method returns {@code this} to indicate that the class
4468      * or interface is the nest host.
4469      *
4470      * <p>If this {@code Class} object represents a primitive type, an array type,
4471      * or {@code void}, then this method returns {@code this},
4472      * indicating that the represented entity belongs to the nest consisting only of
4473      * itself, and is the nest host.
4474      *
4475      * @return the nest host of this class or interface
4476      *
4477      * @throws SecurityException
4478      *         If the returned class is not the current class, and
4479      *         if a security manager, <i>s</i>, is present and the caller's
4480      *         class loader is not the same as or an ancestor of the class
4481      *         loader for the returned class and invocation of {@link
4482      *         SecurityManager#checkPackageAccess s.checkPackageAccess()}
4483      *         denies access to the package of the returned class
4484      * @since 11
4485      * @jvms 4.7.28 The {@code NestHost} Attribute
4486      * @jvms 4.7.29 The {@code NestMembers} Attribute
4487      * @jvms 5.4.4 Access Control
4488      */
4489     @CallerSensitive
4490     public Class<?> getNestHost() {
4491         if (isPrimitive() || isArray()) {
4492             return this;
4493         }
4494 
4495         Class<?> host = getNestHost0();
4496         if (host == this) {
4497             return this;
4498         }
4499         // returning a different class requires a security check
4500         @SuppressWarnings("removal")
4501         SecurityManager sm = System.getSecurityManager();
4502         if (sm != null) {
4503             checkPackageAccess(sm,
4504                                ClassLoader.getClassLoader(Reflection.getCallerClass()), true);
4505         }
4506         return host;
4507     }
4508 
4509     /**
4510      * Determines if the given {@code Class} is a nestmate of the
4511      * class or interface represented by this {@code Class} object.
4512      * Two classes or interfaces are nestmates
4513      * if they have the same {@linkplain #getNestHost() nest host}.
4514      *
4515      * @param c the class to check
4516      * @return {@code true} if this class and {@code c} are members of
4517      * the same nest; and {@code false} otherwise.
4518      *
4519      * @since 11
4520      */
4521     public boolean isNestmateOf(Class<?> c) {
4522         if (this == c) {
4523             return true;
4524         }
4525         if (isPrimitive() || isArray() ||
4526             c.isPrimitive() || c.isArray()) {
4527             return false;
4528         }
4529 
4530         return getNestHost() == c.getNestHost();
4531     }
4532 
4533     private native Class<?>[] getNestMembers0();
4534 
4535     /**
4536      * Returns an array containing {@code Class} objects representing all the
4537      * classes and interfaces that are members of the nest to which the class
4538      * or interface represented by this {@code Class} object belongs.
4539      *
4540      * First, this method obtains the {@linkplain #getNestHost() nest host},
4541      * {@code H}, of the nest to which the class or interface represented by
4542      * this {@code Class} object belongs. The zeroth element of the returned
4543      * array is {@code H}.
4544      *
4545      * Then, for each class or interface {@code C} which is recorded by {@code H}
4546      * as being a member of its nest, this method attempts to obtain the {@code Class}
4547      * object for {@code C} (using {@linkplain #getClassLoader() the defining class
4548      * loader} of the current {@code Class} object), and then obtains the
4549      * {@linkplain #getNestHost() nest host} of the nest to which {@code C} belongs.
4550      * The classes and interfaces which are recorded by {@code H} as being members
4551      * of its nest, and for which {@code H} can be determined as their nest host,
4552      * are indicated by subsequent elements of the returned array. The order of
4553      * such elements is unspecified. Duplicates are permitted.
4554      *
4555      * <p>If this {@code Class} object represents a primitive type, an array type,
4556      * or {@code void}, then this method returns a single-element array containing
4557      * {@code this}.
4558      *
4559      * @apiNote
4560      * The returned array includes only the nest members recorded in the {@code NestMembers}
4561      * attribute, and not any hidden classes that were added to the nest via
4562      * {@link MethodHandles.Lookup#defineHiddenClass(byte[], boolean, MethodHandles.Lookup.ClassOption...)
4563      * Lookup::defineHiddenClass}.
4564      *
4565      * @return an array of all classes and interfaces in the same nest as
4566      * this class or interface
4567      *
4568      * @throws SecurityException
4569      * If any returned class is not the current class, and
4570      * if a security manager, <i>s</i>, is present and the caller's
4571      * class loader is not the same as or an ancestor of the class
4572      * loader for that returned class and invocation of {@link
4573      * SecurityManager#checkPackageAccess s.checkPackageAccess()}
4574      * denies access to the package of that returned class
4575      *
4576      * @since 11
4577      * @see #getNestHost()
4578      * @jvms 4.7.28 The {@code NestHost} Attribute
4579      * @jvms 4.7.29 The {@code NestMembers} Attribute
4580      */
4581     @CallerSensitive
4582     public Class<?>[] getNestMembers() {
4583         if (isPrimitive() || isArray()) {
4584             return new Class<?>[] { this };
4585         }
4586         Class<?>[] members = getNestMembers0();
4587         // Can't actually enable this due to bootstrapping issues
4588         // assert(members.length != 1 || members[0] == this); // expected invariant from VM
4589 
4590         if (members.length > 1) {
4591             // If we return anything other than the current class we need
4592             // a security check
4593             @SuppressWarnings("removal")
4594             SecurityManager sm = System.getSecurityManager();
4595             if (sm != null) {
4596                 checkPackageAccess(sm,
4597                                    ClassLoader.getClassLoader(Reflection.getCallerClass()), true);
4598             }
4599         }
4600         return members;
4601     }
4602 
4603     /**
4604      * Returns the descriptor string of the entity (class, interface, array class,
4605      * primitive type, or {@code void}) represented by this {@code Class} object.
4606      *
4607      * <p> If this {@code Class} object represents a class or interface,
4608      * not an array class, then:
4609      * <ul>
4610      * <li> If the class or interface is not {@linkplain Class#isHidden() hidden},
4611      *      then the result is a field descriptor (JVMS {@jvms 4.3.2})
4612      *      for the class or interface. Calling
4613      *      {@link ClassDesc#ofDescriptor(String) ClassDesc::ofDescriptor}
4614      *      with the result descriptor string produces a {@link ClassDesc ClassDesc}
4615      *      describing this class or interface.
4616      * <li> If the class or interface is {@linkplain Class#isHidden() hidden},
4617      *      then the result is a string of the form:
4618      *      <blockquote>
4619      *      {@code "L" +} <em>N</em> {@code + "." + <suffix> + ";"}
4620      *      </blockquote>
4621      *      where <em>N</em> is the {@linkplain ClassLoader##binary-name binary name}
4622      *      encoded in internal form indicated by the {@code class} file passed to
4623      *      {@link MethodHandles.Lookup#defineHiddenClass(byte[], boolean, MethodHandles.Lookup.ClassOption...)
4624      *      Lookup::defineHiddenClass}, and {@code <suffix>} is an unqualified name.
4625      *      A hidden class or interface has no {@linkplain ClassDesc nominal descriptor}.
4626      *      The result string is not a type descriptor.
4627      * </ul>
4628      *
4629      * <p> If this {@code Class} object represents an array class, then
4630      * the result is a string consisting of one or more '{@code [}' characters
4631      * representing the depth of the array nesting, followed by the
4632      * descriptor string of the element type.
4633      * <ul>
4634      * <li> If the element type is not a {@linkplain Class#isHidden() hidden} class
4635      * or interface, then this array class can be described nominally.
4636      * Calling {@link ClassDesc#ofDescriptor(String) ClassDesc::ofDescriptor}
4637      * with the result descriptor string produces a {@link ClassDesc ClassDesc}
4638      * describing this array class.
4639      * <li> If the element type is a {@linkplain Class#isHidden() hidden} class or
4640      * interface, then this array class cannot be described nominally.
4641      * The result string is not a type descriptor.
4642      * </ul>
4643      *
4644      * <p> If this {@code Class} object represents a primitive type or
4645      * {@code void}, then the result is a field descriptor string which
4646      * is a one-letter code corresponding to a primitive type or {@code void}
4647      * ({@code "B", "C", "D", "F", "I", "J", "S", "Z", "V"}) (JVMS {@jvms 4.3.2}).
4648      *
4649      * @return the descriptor string for this {@code Class} object
4650      * @jvms 4.3.2 Field Descriptors
4651      * @since 12
4652      */
4653     @Override
4654     public String descriptorString() {
4655         if (isPrimitive())
4656             return Wrapper.forPrimitiveType(this).basicTypeString();
4657 
4658         if (isArray()) {
4659             return "[" + componentType.descriptorString();
4660         } else if (isHidden()) {
4661             String name = getName();
4662             int index = name.indexOf('/');
4663             return new StringBuilder(name.length() + 2)
4664                     .append('L')
4665                     .append(name.substring(0, index).replace('.', '/'))
4666                     .append('.')
4667                     .append(name, index + 1, name.length())
4668                     .append(';')
4669                     .toString();
4670         } else {
4671             String name = getName().replace('.', '/');
4672             return new StringBuilder(name.length() + 2)
4673                     .append('L')
4674                     .append(name)
4675                     .append(';')
4676                     .toString();
4677         }
4678     }
4679 
4680     /**
4681      * Returns the component type of this {@code Class}, if it describes
4682      * an array type, or {@code null} otherwise.
4683      *
4684      * @implSpec
4685      * Equivalent to {@link Class#getComponentType()}.
4686      *
4687      * @return a {@code Class} describing the component type, or {@code null}
4688      * if this {@code Class} does not describe an array type
4689      * @since 12
4690      */
4691     @Override
4692     public Class<?> componentType() {
4693         return isArray() ? componentType : null;
4694     }
4695 
4696     /**
4697      * Returns a {@code Class} for an array type whose component type
4698      * is described by this {@linkplain Class}.
4699      *
4700      * @throws UnsupportedOperationException if this component type is {@linkplain
4701      *         Void#TYPE void} or if the number of dimensions of the resulting array
4702      *         type would exceed 255.
4703      * @return a {@code Class} describing the array type
4704      * @jvms 4.3.2 Field Descriptors
4705      * @jvms 4.4.1 The {@code CONSTANT_Class_info} Structure
4706      * @since 12
4707      */
4708     @Override
4709     public Class<?> arrayType() {
4710         try {
4711             return Array.newInstance(this, 0).getClass();
4712         } catch (IllegalArgumentException iae) {
4713             throw new UnsupportedOperationException(iae);
4714         }
4715     }
4716 
4717     /**
4718      * Returns a nominal descriptor for this instance, if one can be
4719      * constructed, or an empty {@link Optional} if one cannot be.
4720      *
4721      * @return An {@link Optional} containing the resulting nominal descriptor,
4722      * or an empty {@link Optional} if one cannot be constructed.
4723      * @since 12
4724      */
4725     @Override
4726     public Optional<ClassDesc> describeConstable() {
4727         Class<?> c = isArray() ? elementType() : this;
4728         return c.isHidden() ? Optional.empty()
4729                             : Optional.of(ClassDesc.ofDescriptor(descriptorString()));
4730    }
4731 
4732     /**
4733      * Returns {@code true} if and only if the underlying class is a hidden class.
4734      *
4735      * @return {@code true} if and only if this class is a hidden class.
4736      *
4737      * @since 15
4738      * @see MethodHandles.Lookup#defineHiddenClass
4739      */
4740     @IntrinsicCandidate
4741     public native boolean isHidden();
4742 
4743     /**
4744      * Returns an array containing {@code Class} objects representing the
4745      * direct subinterfaces or subclasses permitted to extend or
4746      * implement this class or interface if it is sealed.  The order of such elements
4747      * is unspecified. The array is empty if this sealed class or interface has no
4748      * permitted subclass. If this {@code Class} object represents a primitive type,
4749      * {@code void}, an array type, or a class or interface that is not sealed,
4750      * that is {@link #isSealed()} returns {@code false}, then this method returns {@code null}.
4751      * Conversely, if {@link #isSealed()} returns {@code true}, then this method
4752      * returns a non-null value.
4753      *
4754      * For each class or interface {@code C} which is recorded as a permitted
4755      * direct subinterface or subclass of this class or interface,
4756      * this method attempts to obtain the {@code Class}
4757      * object for {@code C} (using {@linkplain #getClassLoader() the defining class
4758      * loader} of the current {@code Class} object).
4759      * The {@code Class} objects which can be obtained and which are direct
4760      * subinterfaces or subclasses of this class or interface,
4761      * are indicated by elements of the returned array. If a {@code Class} object
4762      * cannot be obtained, it is silently ignored, and not included in the result
4763      * array.
4764      *
4765      * @return an array of {@code Class} objects of the permitted subclasses of this class or interface,
4766      *         or {@code null} if this class or interface is not sealed.
4767      *
4768      * @throws SecurityException
4769      *         If a security manager, <i>s</i>, is present and the caller's
4770      *         class loader is not the same as or an ancestor of the class
4771      *         loader for that returned class and invocation of {@link
4772      *         SecurityManager#checkPackageAccess s.checkPackageAccess()}
4773      *         denies access to the package of any class in the returned array.
4774      *
4775      * @jls 8.1 Class Declarations
4776      * @jls 9.1 Interface Declarations
4777      * @since 17
4778      */
4779     @CallerSensitive
4780     public Class<?>[] getPermittedSubclasses() {
4781         Class<?>[] subClasses;
4782         if (isArray() || isPrimitive() || (subClasses = getPermittedSubclasses0()) == null) {
4783             return null;
4784         }
4785         if (subClasses.length > 0) {
4786             if (Arrays.stream(subClasses).anyMatch(c -> !isDirectSubType(c))) {
4787                 subClasses = Arrays.stream(subClasses)
4788                                    .filter(this::isDirectSubType)
4789                                    .toArray(s -> new Class<?>[s]);
4790             }
4791         }
4792         if (subClasses.length > 0) {
4793             // If we return some classes we need a security check:
4794             @SuppressWarnings("removal")
4795             SecurityManager sm = System.getSecurityManager();
4796             if (sm != null) {
4797                 checkPackageAccessForPermittedSubclasses(sm,
4798                                              ClassLoader.getClassLoader(Reflection.getCallerClass()),
4799                                              subClasses);
4800             }
4801         }
4802         return subClasses;
4803     }
4804 
4805     private boolean isDirectSubType(Class<?> c) {
4806         if (isInterface()) {
4807             for (Class<?> i : c.getInterfaces(/* cloneArray */ false)) {
4808                 if (i == this) {
4809                     return true;
4810                 }
4811             }
4812         } else {
4813             return c.getSuperclass() == this;
4814         }
4815         return false;
4816     }
4817 
4818     /**
4819      * Returns {@code true} if and only if this {@code Class} object represents
4820      * a sealed class or interface. If this {@code Class} object represents a
4821      * primitive type, {@code void}, or an array type, this method returns
4822      * {@code false}. A sealed class or interface has (possibly zero) permitted
4823      * subclasses; {@link #getPermittedSubclasses()} returns a non-null but
4824      * possibly empty value for a sealed class or interface.
4825      *
4826      * @return {@code true} if and only if this {@code Class} object represents
4827      * a sealed class or interface.
4828      *
4829      * @jls 8.1 Class Declarations
4830      * @jls 9.1 Interface Declarations
4831      * @since 17
4832      */
4833     public boolean isSealed() {
4834         if (isArray() || isPrimitive()) {
4835             return false;
4836         }
4837         return getPermittedSubclasses() != null;
4838     }
4839 
4840     private native Class<?>[] getPermittedSubclasses0();
4841 
4842     /*
4843      * Return the class's major and minor class file version packed into an int.
4844      * The high order 16 bits contain the class's minor version.  The low order
4845      * 16 bits contain the class's major version.
4846      *
4847      * If the class is an array type then the class file version of its element
4848      * type is returned.  If the class is a primitive type then the latest class
4849      * file major version is returned and zero is returned for the minor version.
4850      */
4851     private int getClassFileVersion() {
4852         Class<?> c = isArray() ? elementType() : this;
4853         return c.getClassFileVersion0();
4854     }
4855 
4856     private native int getClassFileVersion0();
4857 
4858     /*
4859      * Return the access flags as they were in the class's bytecode, including
4860      * the original setting of ACC_SUPER.
4861      *
4862      * If the class is an array type then the access flags of the element type is
4863      * returned.  If the class is a primitive then ACC_ABSTRACT | ACC_FINAL | ACC_PUBLIC.
4864      */
4865     private int getClassAccessFlagsRaw() {
4866         Class<?> c = isArray() ? elementType() : this;
4867         return c.getClassAccessFlagsRaw0();
4868     }
4869 
4870     private native int getClassAccessFlagsRaw0();
4871 
4872     // Support for "OLD" CDS workflow -- {
4873     private static final int RD_PUBLIC_METHODS          = (1 <<  0);
4874     private static final int RD_PUBLIC_FIELDS           = (1 <<  1);
4875     private static final int RD_DECLARED_CTORS          = (1 <<  2);
4876     private static final int RD_PUBLIC_CTORS = (1 <<  3);
4877     private static final int RD_DECLARED_METHODS        = (1 <<  4);
4878     private static final int RD_DECLARED_PUBLIC_METHODS = (1 <<  5);
4879     private static final int RD_DECLARED_FIELDS         = (1 <<  6);
4880     private static final int RD_DECLARED_PUBLIC_FIELDS  = (1 <<  7);
4881     private static final int RD_DECLARED_INTERFACES     = (1 <<  8);
4882     private static final int RD_DECLARED_SIMPLE_NAME    = (1 <<  9);
4883     private static final int RD_DECLARED_CANONICAL_NAME = (1 << 10);
4884     private static final int CLS_NAME = (1 << 10);
4885 
4886 
4887     private int encodeReflectionData() {
4888         int flags = CLS_NAME;
4889         if (reflectionData != null) {
4890             flags = (reflectionData.publicMethods         != null ? RD_PUBLIC_METHODS          : 0) |
4891                     (reflectionData.publicFields          != null ? RD_PUBLIC_FIELDS           : 0) |
4892                     (reflectionData.declaredConstructors  != null ? RD_DECLARED_CTORS          : 0) |
4893                     (reflectionData.publicConstructors    != null ? RD_PUBLIC_CTORS            : 0) |
4894                     (reflectionData.declaredMethods       != null ? RD_DECLARED_METHODS        : 0) |
4895                     (reflectionData.declaredPublicMethods != null ? RD_DECLARED_PUBLIC_METHODS : 0) |
4896                     (reflectionData.declaredFields        != null ? RD_DECLARED_FIELDS         : 0) |
4897                     (reflectionData.declaredPublicFields  != null ? RD_DECLARED_PUBLIC_FIELDS  : 0) |
4898                     (reflectionData.interfaces            != null ? RD_DECLARED_INTERFACES     : 0) |
4899                     (reflectionData.simpleName            != null ? RD_DECLARED_SIMPLE_NAME    : 0) |
4900                     (reflectionData.canonicalName         != null ? RD_DECLARED_CANONICAL_NAME : 0);
4901         }
4902         return flags;
4903     }
4904     private void generateReflectionData(int flags) {
4905         if ((flags & CLS_NAME                  ) != 0) { getName();                             } // String name
4906         if ((flags & RD_PUBLIC_METHODS         ) != 0) { privateGetPublicMethods();             } // Method[] publicMethods;
4907         if ((flags & RD_PUBLIC_FIELDS          ) != 0) { privateGetPublicFields();              } // Field[] publicFields;
4908         if ((flags & RD_DECLARED_CTORS         ) != 0) { privateGetDeclaredConstructors(false); } // Constructor<T>[] declaredConstructors;
4909         if ((flags & RD_PUBLIC_CTORS           ) != 0) { privateGetDeclaredConstructors(true);  } // Constructor<T>[] publicConstructors;
4910         if ((flags & RD_DECLARED_METHODS       ) != 0) { privateGetDeclaredMethods(false);      } // Method[] declaredMethods;
4911         if ((flags & RD_DECLARED_PUBLIC_METHODS) != 0) { privateGetDeclaredMethods(true);       } // Method[] declaredPublicMethods;
4912         if ((flags & RD_DECLARED_FIELDS        ) != 0) { privateGetDeclaredFields(false);       } // Field[] declaredFields;
4913         if ((flags & RD_DECLARED_PUBLIC_FIELDS ) != 0) { privateGetDeclaredFields(true);        } // Field[] declaredPublicFields;
4914         if ((flags & RD_DECLARED_INTERFACES    ) != 0) { getInterfaces(false);                  } // Class<?>[] interfaces;
4915         if ((flags & RD_DECLARED_SIMPLE_NAME   ) != 0) { getSimpleName();                       } // String simpleName;
4916         if ((flags & RD_DECLARED_CANONICAL_NAME) != 0) { getCanonicalName();                    } // String canonicalName;
4917     }
4918 
4919     // -- }
4920 }
--- EOF ---