| /* |
| * Copyright 2003-2006 The Apache Software Foundation |
| * |
| * 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 org.apache.commons.collections.keyvalue; |
| |
| import org.apache.commons.collections.KeyValue; |
| |
| /** |
| * Abstract pair class to assist with creating <code>KeyValue</code> |
| * and {@link java.util.Map.Entry Map.Entry} implementations. |
| * |
| * @since Commons Collections 3.0 |
| * @version $Revision: 1.1 $ $Date: 2009/05/27 22:16:28 $ |
| * |
| * @author James Strachan |
| * @author Michael A. Smith |
| * @author Neil O'Toole |
| * @author Stephen Colebourne |
| */ |
| public abstract class AbstractKeyValue implements KeyValue { |
| |
| /** The key */ |
| protected Object key; |
| /** The value */ |
| protected Object value; |
| |
| /** |
| * Constructs a new pair with the specified key and given value. |
| * |
| * @param key the key for the entry, may be null |
| * @param value the value for the entry, may be null |
| */ |
| protected AbstractKeyValue(Object key, Object value) { |
| super(); |
| this.key = key; |
| this.value = value; |
| } |
| |
| /** |
| * Gets the key from the pair. |
| * |
| * @return the key |
| */ |
| public Object getKey() { |
| return key; |
| } |
| |
| /** |
| * Gets the value from the pair. |
| * |
| * @return the value |
| */ |
| public Object getValue() { |
| return value; |
| } |
| |
| /** |
| * Gets a debugging String view of the pair. |
| * |
| * @return a String view of the entry |
| */ |
| public String toString() { |
| return new StringBuffer() |
| .append(getKey()) |
| .append('=') |
| .append(getValue()) |
| .toString(); |
| } |
| |
| } |