1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * https://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.collections4;
19
20 /**
21 * Defines a simple key value pair.
22 * <p>
23 * A Map Entry has considerable additional semantics over and above a simple key-value pair. This interface defines the minimum key value, with just the two get
24 * methods.
25 * </p>
26 *
27 * @param <K> The type of the key.
28 * @param <V> The type of the value.
29 * @since 3.0
30 */
31 public interface KeyValue<K, V> {
32
33 /**
34 * Gets the key from the pair.
35 *
36 * @return The key.
37 */
38 K getKey();
39
40 /**
41 * Gets the value from the pair.
42 *
43 * @return The value.
44 */
45 V getValue();
46 }