/*
 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
 *  
 * Redistribution and use in source and binary forms, with or 
 * without modification, are permitted provided that the following 
 * conditions are met:
 * 
 * -Redistributions of source code must retain the above copyright  
 *  notice, this list of conditions and the following disclaimer.
 * 
 * -Redistribution in binary form must reproduce the above copyright 
 *  notice, this list of conditions and the following disclaimer in 
 *  the documentation and/or other materials provided with the 
 *  distribution.
 *  
 * Neither the name of Oracle or the names of 
 * contributors may be used to endorse or promote products derived 
 * from this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any 
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND 
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY 
 * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY 
 * DAMAGES OR LIABILITIES  SUFFERED BY LICENSEE AS A RESULT OF OR 
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 *  
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 */

import java.util.Timer;
import java.util.TimerTask;

/**
 *Simple countdown timer demo of java.util.Timer facility.
 */

public class Countdown {
    public static void main(final String args[]) {
        if (args.length != 1) {
            System.err.println("Usage: java Countdown <time in secs>");
            System.exit(1);
        }
        final Timer timer = new Timer();
        timer.scheduleAtFixedRate(new TimerTask() {
            int i = Integer.parseInt(args[0]);
            public void run() {
                System.out.println(i--);
                if (i< 0)
                    timer.cancel();
            }
        }, 0, 1000);
    }
}