01: /*
02: * Copyright 2003-2004 The Apache Software Foundation
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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: 155406 $ $Date: 2005-02-26 12:55:26 +0000 (Sat, 26 Feb 2005) $
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: }
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