1 /*
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  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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  5  * This code is free software; you can redistribute it and/or modify it
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  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
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 24  */
 25 
 26 package javax.lang.model.element;
 27 
 28 
 29 /**
 30  * Represents a modifier on a program element such
 31  * as a class, method, or field.
 32  *
 33  * <p>Not all modifiers are applicable to all kinds of elements.
 34  * When two or more modifiers appear in the source code of an element
 35  * then it is customary, though not required, that they appear in the same
 36  * order as the constants listed in the detail section below.
 37  *
 38  * <p>Note that it is possible additional modifiers will be added in
 39  * future versions of the platform.
 40  *
 41  * @jls 8.1.1 Class Modifiers
 42  * @jls 8.3.1 Field Modifiers
 43  * @jls 8.4.3 Method Modifiers
 44  * @jls 8.8.3 Constructor Modifiers
 45  * @jls 9.1.1 Interface Modifiers
 46  *
 47  * @author Joseph D. Darcy
 48  * @author Scott Seligman
 49  * @author Peter von der Ah&eacute;
 50  * @since 1.6
 51  */
 52 
 53 public enum Modifier {
 54 
 55     // Note java.lang.reflect.Modifier includes INTERFACE, but that's a VMism.
 56 
 57     /** The modifier {@code public} */          PUBLIC,
 58     /** The modifier {@code protected} */       PROTECTED,
 59     /** The modifier {@code private} */         PRIVATE,
 60     /** The modifier {@code abstract} */        ABSTRACT,
 61     /**
 62      * The modifier {@code default}
 63      * @since 1.8
 64      */
 65      DEFAULT,
 66     /** The modifier {@code static} */          STATIC,
 67 
 68     /**
 69      * The modifier {@code sealed}
 70      * @since 17
 71      */
 72     SEALED,
 73 
 74     /**
 75      * The modifier {@code non-sealed}
 76      * @since 17
 77      */
 78     NON_SEALED {
 79         public String toString() {
 80             return "non-sealed";
 81         }
 82     },
 83     /** The modifier {@code final} */           FINAL,
 84     /** The modifier {@code transient} */       TRANSIENT,
 85     /** The modifier {@code volatile} */        VOLATILE,
 86     /** The modifier {@code synchronized} */    SYNCHRONIZED,
 87     /** The modifier {@code native} */          NATIVE,
 88     /** The modifier {@code strictfp} */        STRICTFP;
 89 
 90     /**
 91      * Returns this modifier's name as defined in <cite>The
 92      * Java Language Specification</cite>.
 93      * The modifier name is the {@linkplain #name() name of the enum
 94      * constant} in lowercase and with any underscores ("{@code _}")
 95      * replaced with hyphens ("{@code -}").
 96      * @return the modifier's name
 97      */
 98     @Override
 99     public String toString() {
100         return name().toLowerCase(java.util.Locale.US);
101     }
102 }