SkippingBeep.java Source code

Introduction

Here is the source code for SkippingBeep.java

Source

/* From http://java.sun.com/docs/books/tutorial/index.html */
/*
 * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * -Redistribution 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 Sun Microsystems, Inc. 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 MIDROSYSTEMS, INC. ("SUN")
 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
 * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
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 * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
 * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
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 *
 * You acknowledge that this software is not designed, licensed or intended
 * for use in the design, construction, operation or maintenance of any
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 */

import java.awt.Toolkit;
import java.util.Timer;
import java.util.TimerTask;

/**
 * Schedule a task that executes once every second.
 */

public class SkippingBeep {
    Toolkit toolkit;

    Timer timer;

    public SkippingBeep() {
        toolkit = Toolkit.getDefaultToolkit();
        timer = new Timer();
        timer.scheduleAtFixedRate(new RemindTask(), 0, //initial delay
                1 * 1000); //subsequent rate
    }

    class RemindTask extends TimerTask {
        int numWarningBeeps = 3;

        public void run() {
            if (numWarningBeeps-- > 0) {
                long time = System.currentTimeMillis();
                if (time - scheduledExecutionTime() > 5) {
                    return;
                }

                //If it's not too late, beep.
                toolkit.beep();
                System.out.println("Beep!");
            } else {
                toolkit.beep();
                System.out.println("Time's up!");
                //timer.cancel(); //Not necessary because we call System.exit
                System.exit(0); //Stops the AWT thread (and everything else)
            }
        }
    }

    public static void main(String args[]) {
        System.out.println("About to schedule task.");
        new SkippingBeep();
        System.out.println("Task scheduled.");
    }
}