8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.base/share/classes/java/lang/annotation/Target.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2003, 2015, 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;
+
+/**
+ * Indicates the contexts in which an annotation type is applicable. The
+ * declaration contexts and type contexts in which an annotation type may be
+ * applicable are specified in JLS 9.6.4.1, and denoted in source code by enum
+ * constants of {@link ElementType java.lang.annotation.ElementType}.
+ *
+ * <p>If an {@code @Target} meta-annotation is not present on an annotation type
+ * {@code T} , then an annotation of type {@code T} may be written as a
+ * modifier for any declaration except a type parameter declaration.
+ *
+ * <p>If an {@code @Target} meta-annotation is present, the compiler will enforce
+ * the usage restrictions indicated by {@code ElementType}
+ * enum constants, in line with JLS 9.7.4.
+ *
+ * <p>For example, this {@code @Target} meta-annotation indicates that the
+ * declared type is itself a meta-annotation type.  It can only be used on
+ * annotation type declarations:
+ * <pre>
+ *    &#064;Target(ElementType.ANNOTATION_TYPE)
+ *    public &#064;interface MetaAnnotationType {
+ *        ...
+ *    }
+ * </pre>
+ *
+ * <p>This {@code @Target} meta-annotation indicates that the declared type is
+ * intended solely for use as a member type in complex annotation type
+ * declarations.  It cannot be used to annotate anything directly:
+ * <pre>
+ *    &#064;Target({})
+ *    public &#064;interface MemberType {
+ *        ...
+ *    }
+ * </pre>
+ *
+ * <p>It is a compile-time error for a single {@code ElementType} constant to
+ * appear more than once in an {@code @Target} annotation.  For example, the
+ * following {@code @Target} meta-annotation is illegal:
+ * <pre>
+ *    &#064;Target({ElementType.FIELD, ElementType.METHOD, ElementType.FIELD})
+ *    public &#064;interface Bogus {
+ *        ...
+ *    }
+ * </pre>
+ *
+ * @since 1.5
+ * @jls 9.6.4.1 @Target
+ * @jls 9.7.4 Where Annotations May Appear
+ * @jls 9.7.5 Multiple Annotations of the Same Type
+ */
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.ANNOTATION_TYPE)
+public @interface Target {
+    /**
+     * Returns an array of the kinds of elements an annotation type
+     * can be applied to.
+     * @return an array of the kinds of elements an annotation type
+     * can be applied to
+     */
+    ElementType[] value();
+}