7151008: Add library support for repeating annotations in java.lang.annotation

Reviewed-by: mcimadamore, jjg

jdk/src/share/classes/java/lang/annotation/ContainerAnnotation.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2012, 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
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.lang.annotation;
+
+/**
+ * A meta-annotation to indicate which annotation type should be used
+ * as a container for repeated values of the annotation type modified
+ * by the {@code ContainerAnnotation} annotation.
+ *
+ * @since 1.8
+ * @jls 9.6 Annotation Types
+ * @jls 9.7 Annotations
+ */
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.ANNOTATION_TYPE)
+public @interface ContainerAnnotation {
+    /**
+     * The annotation type to use to store repeated values of another
+     * annotation.
+     */
+    Class<? extends Annotation> value();
+}