/*
* Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.max.collect;
import java.io.*;
import java.util.*;
import com.sun.max.*;
/**
* A subclass of {@link Properties} that {@linkplain Collections#sort(java.util.List) sorts} its properties as they
* are saved.
*/
public class SortedProperties extends Properties {
/**
* Overridden so that the properties are {@linkplain #store(Writer, String) saved} sorted according their keys.
*/
@Override
public synchronized Enumeration<Object> keys() {
final Enumeration<Object> keysEnum = super.keys();
final Vector<String> keyList = new Vector<String>(size());
while (keysEnum.hasMoreElements()) {
keyList.add((String) keysEnum.nextElement());
}
Collections.sort(keyList);
final Class<Enumeration<Object>> type = null;
return Utils.cast(type, keyList.elements());
}
}