content: /*
   * Copyright (c) 2003, 2013, 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
   */
  @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();
  }
  