stringcompare.java

iText可以制作中文PDF文件的JAVA源程序

/*
 * $Id: StringCompare.java,v 1.22 2002/07/09 10:41:40 blowagie Exp $
 * $Name:  $
 *
 * Copyright 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * Copyright (c) 2000 Volker Richert
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library 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 Library general Public License for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */

package com.lowagie.text;

import java.util.Comparator;

/**
 * This class was used in the 1.1-version of iText (by Volker Richert).
 * Paulo Soares suggested I should add it to the original library, so
 * that in the future it would be easier to port it to the JDK1.1.x.
 */

public class StringCompare implements Comparator {
    
/**
 * Compares 2 objects.
 *
 * @param   o1  a first object
 * @param   o2  a second object
 * @return  a value
 * @throws  ClassCastException  if the objects aren't Strings
 */
    
    public int compare(Object o1, Object o2) {
        return compare((String)o1, (String)o2);
    }
    
/**
 * Compares 2 strings.
 *
 * @param   s1  a first string
 * @param   s2  a second string
 * @return  a value
 */
    
    public int compare(String s1, String s2) {
        return s1.compareTo(s2);
    }
    
/**
 * We need this function if we want to implement the Comparable interface, but we don't use this method.
 *
 * @return  always true
 */
    
    public boolean equals(Object o) {
        return true;
    }
}