http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/* $Id: DestinationComparator.java 1616312 2014-08-06 19:19:31Z gadams $ */

package org.apache.fop.pdf;


Comparator class to enable comparing (and
hence sorting) of PDFDestination objects.

/**
 * Comparator class to enable comparing (and
 * hence sorting) of PDFDestination objects.
 */
public class DestinationComparator implements java.util.Comparator, java.io.Serializable {
/*  public int compare (PDFDestination dest1, PDFDestination dest2) {
    return dest1.getIDRef().compareTo(dest2.getIDRef());
  }*/

    static final long serialVersionUID = 0L;

    
{@inheritDoc} 
/** {@inheritDoc} */
    public int compare(Object obj1, Object obj2) {
        if (obj1 instanceof PDFDestination && obj2 instanceof PDFDestination) {
            PDFDestination dest1 = (PDFDestination)obj1;
            PDFDestination dest2 = (PDFDestination)obj2;
            return dest1.getIDRef().compareTo(dest2.getIDRef());
        }
        return 0;
    }
}