src/java.base/share/classes/java/lang/reflect/Field.java

@@ -1,7 +1,7 @@
  /*
-  * Copyright (c) 1996, 2021, Oracle and/or its affiliates. All rights reserved.
+  * Copyright (c) 1996, 2022, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this

@@ -24,10 +24,11 @@
   */
  
  package java.lang.reflect;
  
  import jdk.internal.access.SharedSecrets;
+ import jdk.internal.value.PrimitiveClass;
  import jdk.internal.reflect.CallerSensitive;
  import jdk.internal.reflect.FieldAccessor;
  import jdk.internal.reflect.Reflection;
  import jdk.internal.vm.annotation.ForceInline;
  import jdk.internal.vm.annotation.Stable;

@@ -127,10 +128,11 @@
            boolean trustedFinal,
            int slot,
            String signature,
            byte[] annotations)
      {
+         assert PrimitiveClass.isPrimaryType(declaringClass);
          this.clazz = declaringClass;
          this.name = name;
          this.type = type;
          this.modifiers = modifiers;
          this.trustedFinal = trustedFinal;

@@ -342,17 +344,25 @@
       */
      public String toString() {
          int mod = getModifiers();
          return (((mod == 0) ? "" : (Modifier.toString(mod) + " "))
              + getType().getTypeName() + " "
-             + getDeclaringClass().getTypeName() + "."
+             + getDeclaringClassTypeName() + "."
              + getName());
      }
  
      @Override
      String toShortString() {
-         return "field " + getDeclaringClass().getTypeName() + "." + getName();
+         return "field " + getDeclaringClassTypeName() + "." + getName();
+     }
+ 
+     String getDeclaringClassTypeName() {
+         Class<?> c = getDeclaringClass();
+         if (PrimitiveClass.isPrimitiveClass(c)) {
+             c = PrimitiveClass.asValueType(c);
+         }
+         return c.getTypeName();
      }
  
      /**
       * Returns a string describing this {@code Field}, including
       * its generic type.  The format is the access modifiers for the

@@ -376,11 +386,11 @@
      public String toGenericString() {
          int mod = getModifiers();
          Type fieldType = getGenericType();
          return (((mod == 0) ? "" : (Modifier.toString(mod) + " "))
              + fieldType.getTypeName() + " "
-             + getDeclaringClass().getTypeName() + "."
+             + getDeclaringClassTypeName() + "."
              + getName());
      }
  
      /**
       * Returns the value of the field represented by this {@code Field}, on

@@ -769,11 +779,13 @@
       * <ul>
       * <li>{@link #setAccessible(boolean) setAccessible(true)} has succeeded for
       *     this {@code Field} object;</li>
       * <li>the field is non-static; and</li>
       * <li>the field's declaring class is not a {@linkplain Class#isHidden()
-      *     hidden class}; and</li>
+      *     hidden class};</li>
+      * <li>the field's declaring class is not a {@linkplain Class#isValue()
+      *     value class}; and</li>
       * <li>the field's declaring class is not a {@linkplain Class#isRecord()
       *     record class}.</li>
       * </ul>
       * If any of the above checks is not met, this method throws an
       * {@code IllegalAccessException}.