Collection


1   /*
2    * Copyright 2006 Google Inc.
3    * 
4    * Licensed under the Apache License, Version 2.0 (the "License"); you may not
5    * use this file except in compliance with the License. You may obtain a copy of
6    * 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, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations under
14   * the License.
15   */
16  package java.util;
17  
18  /**
19   * General-purpose interface for storing collections of objects.
20   */
21  public interface Collection {
22  
23    boolean add(Object   o);
24  
25    boolean addAll(Collection   c);
26  
27    void clear();
28  
29    boolean contains(Object   o);
30  
31    boolean containsAll(Collection   c);
32  
33    boolean equals(Object   o);
34  
35    int hashCode();
36  
37    boolean isEmpty();
38  
39    Iterator   iterator();
40  
41    boolean remove(Object   o);
42  
43    boolean removeAll(Collection   c);
44  
45    boolean retainAll(Collection   c);
46  
47    int size();
48  
49    Object  [] toArray();
50  
51  }
52

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