1   /*
2    *  Copyright 2003-2004 The Apache Software Foundation
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  package org.apache.commons.collections;
17  
18  /**
19   * Defines a simple key value pair.
20   * <p>
21   * A Map Entry has considerable additional semantics over and above a simple
22   * key-value pair. This interface defines the minimum key value, with just the
23   * two get methods.
24   *
25   * @since Commons Collections 3.0
26   * @version $Revision: 1.1 $ $Date: 2004/05/10 19:52:59 $
27   * 
28   * @author Stephen Colebourne
29   */
30  public interface KeyValue {
31  
32      /**
33       * Gets the key from the pair.
34       *
35       * @return the key 
36       */
37      Object getKey();
38  
39      /**
40       * Gets the value from the pair.
41       *
42       * @return the value
43       */
44      Object getValue();
45  
46  }