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 */ 017 package org.apache.commons.collections.iterators; 018 019 import org.apache.commons.collections.MapIterator; 020 import org.apache.commons.collections.ResettableIterator; 021 022 /** 023 * Provides an implementation of an empty map iterator. 024 * 025 * @since Commons Collections 3.1 026 * @version $Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $ 027 * 028 * @author Stephen Colebourne 029 */ 030 public class EmptyMapIterator extends AbstractEmptyIterator implements MapIterator, ResettableIterator { 031 032 /** 033 * Singleton instance of the iterator. 034 * @since Commons Collections 3.1 035 */ 036 public static final MapIterator INSTANCE = new EmptyMapIterator(); 037 038 /** 039 * Constructor. 040 */ 041 protected EmptyMapIterator() { 042 super(); 043 } 044 045 }