Singleton


1   /**
2    * Copyright (C) 2006 Google Inc.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package com.google.inject;
18  
19  import java.lang.annotation.ElementType  ;
20  import java.lang.annotation.Retention  ;
21  import static java.lang.annotation.RetentionPolicy.RUNTIME  ;
22  import java.lang.annotation.Target  ;
23  
24  /**
25   * Apply this to implementation classes when you want only one instance
26   * (per {@link Injector}) to be reused for all injections for that binding.
27   *
28   * @author crazybob@google.com (Bob Lee)
29   */
30  @Target  (ElementType.TYPE)
31  @Retention  (RUNTIME)
32  @ScopeAnnotation
33  public @interface Singleton {}
34

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