1/*
2 * Copyright (C) 2008 The Guava Authors
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
17package com.google.common.collect;
18
19import com.google.common.annotations.GwtCompatible;
20
21import java.io.Serializable;
22
23import javax.annotation.Nullable;
24
25/**
26 * @see com.google.common.collect.Maps#immutableEntry(Object, Object)
27 */
28@GwtCompatible(serializable = true)
29class ImmutableEntry<K, V> extends AbstractMapEntry<K, V>
30    implements Serializable {
31  private final K key;
32  private final V value;
33
34  ImmutableEntry(@Nullable K key, @Nullable V value) {
35    this.key = key;
36    this.value = value;
37  }
38
39  @Nullable @Override public K getKey() {
40    return key;
41  }
42
43  @Nullable @Override public V getValue() {
44    return value;
45  }
46
47  @Override public final V setValue(V value){
48    throw new UnsupportedOperationException();
49  }
50
51  private static final long serialVersionUID = 0;
52}
53