1 /*
 2  * Copyright (c) 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 package jdk.internal;
26 
27 import java.lang.annotation.Retention;
28 import java.lang.annotation.RetentionPolicy;
29 import java.lang.annotation.Target;
30 
31 import static java.lang.annotation.ElementType.TYPE;
32 
33 /**
34  * Indicates the API declaration in question is associated with a migrated value class.
35  *
36  * Note this internal annotation is handled specially by the javac compiler.
37  * To work properly with {@code --release older-release}, it requires special
38  * handling in {@code make/langtools/src/classes/build/tools/symbolgenerator/CreateSymbols.java}
39  * and {@code src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassReader.java}.
40  *
41  * @since 23
42  */
43 @Retention(RetentionPolicy.RUNTIME)
44 @Target(value={TYPE})
45 public @interface MigratedValueClass {
46 }