Util.java Source code

Introduction

Here is the source code for Util.java

Source

import java.text.CharacterIterator;
import java.text.StringCharacterIterator;

/*
 *  SSHTools - Java SSH2 API
 *
 *  Copyright (C) 2002-2003 Lee David Painter and Contributors.
 *
 *  Contributions made by:
 *
 *  Brett Smith
 *  Richard Pernavas
 *  Erwin Bolwidt
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
//package com.sshtools.daemon.util;

/**
 * The sole instance of this class provides several convienience methods for
 * string manipulation such as substring replacement or character repetition.
 *
 * @author Manfred Duchrow
 * @version 2.0
 */
public class Util {
    /**
    * Returns a string that contains all characters of the given string in
    * reverse order.
    *
    * @param str
    *
    * @return
    */
    public String reverse(String str) {
        if (str == null) {
            return null;
        }

        char[] newStr = new char[str.length()];
        StringCharacterIterator iterator = new StringCharacterIterator(str);
        int i = 0;

        for (char ch = iterator.last(); ch != CharacterIterator.DONE; ch = iterator.previous()) {
            newStr[i] = ch;
            i++;
        }

        return new String(newStr);
    }

}