1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.jxpath.util; 18 19 import java.io.Serializable; 20 import java.util.Comparator; 21 22 /** 23 * Reverse comparator. 24 * 25 * @author Dmitri Plotnikov 26 * @version $Revision: 668329 $ $Date: 2008-06-16 23:59:48 +0200 (Mo, 16 Jun 2008) $ 27 */ 28 public final class ReverseComparator implements Comparator, Serializable { 29 private static final long serialVersionUID = -2795475743948616649L; 30 31 /** 32 * Singleton reverse comparator instance. 33 */ 34 public static final Comparator INSTANCE = new ReverseComparator(); 35 36 /** 37 * Create a new ReverseComparator. 38 */ 39 private ReverseComparator() { 40 } 41 42 public int compare(Object o1, Object o2) { 43 return ((Comparable) o2).compareTo(o1); 44 } 45 46 }