/*
 * Copyright (C) 2008 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.collect;

import java.io.Serializable;

import javax.annotation.Nullable;

import com.google.common.annotations.GwtCompatible;

/**
 * @see com.google.common.collect.Maps#immutableEntry(Object, Object)
 */
@GwtCompatible(serializable = true)
class ImmutableEntry<K, V> extends AbstractMapEntry<K, V> implements Serializable {
	final K key;
	final V value;

	ImmutableEntry(@Nullable K key, @Nullable V value) {
		this.key = key;
		this.value = value;
	}

	@Nullable
	@Override
	public final K getKey() {
		return key;
	}

	@Nullable
	@Override
	public final V getValue() {
		return value;
	}

	@Override
	public final V setValue(V value) {
		throw new UnsupportedOperationException();
	}

	private static final long serialVersionUID = 0;
}
