    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017package org.apache.commons.collections4.iterators;
    018
    019/**
    020 * Provides an implementation of an empty map iterator.
    021 *
    022 * @since 4.0
    023 */
    024public abstract class AbstractEmptyMapIterator<K, V> extends AbstractEmptyIterator<K> {
    025
    026    /**
    027     * Create a new AbstractEmptyMapIterator.
    028     */
    029    public AbstractEmptyMapIterator() {
    030        super();
    031    }
    032
    033    public K getKey() {
    034        throw new IllegalStateException("Iterator contains no elements");
    035    }
    036
    037    public V getValue() {
    038        throw new IllegalStateException("Iterator contains no elements");
    039    }
    040
    041    public V setValue(final V value) {
    042        throw new IllegalStateException("Iterator contains no elements");
    043    }
    044
    045}