    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     * contributor license agreements.  See the NOTICE file distributed with
    004     * this work for additional information regarding copyright ownership.
    005     * The ASF licenses this file to You under the Apache License, Version 2.0
    006     * (the "License"); you may not use this file except in compliance with
    007     * the License.  You may obtain a copy of the License at
    008     *
    009     *     http://www.apache.org/licenses/LICENSE-2.0
    010     *
    011     * Unless required by applicable law or agreed to in writing, software
    012     * distributed under the License is distributed on an "AS IS" BASIS,
    013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014     * See the License for the specific language governing permissions and
    015     * limitations under the License.
    016     */
    017    package org.apache.commons.jxpath.util;
    018
    019    import java.io.Serializable;
    020    import java.util.Comparator;
    021
    022    /**
    023     * Reverse comparator.
    024     *
    025     * @author Dmitri Plotnikov
    026     * @version $Revision: 668329 $ $Date: 2008-06-16 16:59:48 -0500 (Mon, 16 Jun 2008) $
    027     */
    028    public final class ReverseComparator implements Comparator, Serializable {
    029        private static final long serialVersionUID = -2795475743948616649L;
    030
    031        /**
    032         * Singleton reverse comparator instance.
    033         */
    034        public static final Comparator INSTANCE = new ReverseComparator();
    035
    036        /**
    037         * Create a new ReverseComparator.
    038         */
    039        private ReverseComparator() {
    040        }
    041
    042        public int compare(Object o1, Object o2) {
    043            return ((Comparable) o2).compareTo(o1);
    044        }
    045
    046    }