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.keyvalue; 018 019 import java.util.Map; 020 021 import org.apache.commons.collections.KeyValue; 022 023 /** 024 * A restricted implementation of {@link java.util.Map.Entry} that prevents 025 * the <code>Map.Entry</code> contract from being broken. 026 * 027 * @since Commons Collections 3.0 028 * @version $Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $ 029 * 030 * @author James Strachan 031 * @author Michael A. Smith 032 * @author Neil O'Toole 033 * @author Stephen Colebourne 034 */ 035 public final class DefaultMapEntry extends AbstractMapEntry { 036 037 /** 038 * Constructs a new entry with the specified key and given value. 039 * 040 * @param key the key for the entry, may be null 041 * @param value the value for the entry, may be null 042 */ 043 public DefaultMapEntry(final Object key, final Object value) { 044 super(key, value); 045 } 046 047 /** 048 * Constructs a new entry from the specified <code>KeyValue</code>. 049 * 050 * @param pair the pair to copy, must not be null 051 * @throws NullPointerException if the entry is null 052 */ 053 public DefaultMapEntry(final KeyValue pair) { 054 super(pair.getKey(), pair.getValue()); 055 } 056 057 /** 058 * Constructs a new entry from the specified <code>Map.Entry</code>. 059 * 060 * @param entry the entry to copy, must not be null 061 * @throws NullPointerException if the entry is null 062 */ 063 public DefaultMapEntry(final Map.Entry entry) { 064 super(entry.getKey(), entry.getValue()); 065 } 066 067 }