Mercurial > hg > truffle
annotate graal/com.oracle.max.base/src/com/sun/max/collect/SortedProperties.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
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children | bc8527f3071c |
rev | line source |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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1 /* |
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2 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package com.sun.max.collect; |
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24 |
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25 import java.io.*; |
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26 import java.util.*; |
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27 |
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28 import com.sun.max.*; |
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29 |
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30 /** |
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31 * A subclass of {@link Properties} that {@linkplain Collections#sort(java.util.List) sorts} its properties as they |
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32 * are saved. |
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33 */ |
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34 public class SortedProperties extends Properties { |
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35 |
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36 /** |
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37 * Overridden so that the properties are {@linkplain #store(Writer, String) saved} sorted according their keys. |
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38 */ |
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39 @Override |
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40 public synchronized Enumeration<Object> keys() { |
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41 final Enumeration<Object> keysEnum = super.keys(); |
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42 final Vector<String> keyList = new Vector<String>(size()); |
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43 while (keysEnum.hasMoreElements()) { |
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44 keyList.add((String) keysEnum.nextElement()); |
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45 } |
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46 Collections.sort(keyList); |
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47 final Class<Enumeration<Object>> type = null; |
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48 return Utils.cast(type, keyList.elements()); |
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49 } |
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50 } |