Mega Code Archive
Extended Version of java util HashMap that provides an extended get method accpeting a default value
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
import java.util.Map;
/**
* Extended Version of {@link java.util.HashMap} that provides an extended
* get method accpeting a default value. The default value is returned if
* the map does not contain a value for the provided key.
*
* @version $Id: HashMap.java 587751 2007-10-24 02:41:36Z vgritsenko $
*/
public class HashMap extends java.util.HashMap {
public HashMap () {
super();
}
public HashMap ( int initialCapacity ) {
super(initialCapacity);
}
public HashMap ( int initialCapacity, float loadFactor ) {
super(initialCapacity, loadFactor);
}
public HashMap ( Map t) {
super(t);
}
/**
* Get method extended by default object to be returned when key
* is not found.
*
* @param key key to look up
* @param _default default value to return if key is not found
* @return value that is associated with key
*/
public Object get( Object key, Object _default ) {
if (this.containsKey(key)) {
return this.get(key);
}
return _default;
}
}
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