/
SortedProperties.java
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/
SortedProperties.java
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/**
* Copyright (c) 2000-2005 Liferay, LLC. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.liferay.util;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Properties;
import java.util.Set;
import java.util.TreeSet;
/**
* <a href="SortedProperties.java.html"><b><i>View Source</i></b></a>
*
* @author Brian Wing Shun Chan
* @version $Revision: 1.2 $
*
*/
public class SortedProperties extends Properties {
public SortedProperties() {
super();
_names = new TreeSet();
}
public Enumeration propertyNames() {
return Collections.enumeration(_names);
}
public Object put(Object key, Object value) {
if (_names.contains(key)) {
_names.remove(key);
}
_names.add(key);
return super.put(key, value);
}
public Object remove(Object key) {
_names.remove(key);
return super.remove(key);
}
private Set _names;
}