CanStop.java Source code

Introduction

Here is the source code for CanStop.java

Source

// : c13:Stopping.java
// The safe way to stop a thread.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

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

class CanStop extends Thread {
    // Must be volatile:
    private volatile boolean stop = false;

    private int counter = 0;

    public void run() {
        while (!stop && counter < 10000) {
            System.out.println(counter++);
        }
        if (stop)
            System.out.println("Detected stop");
    }

    public void requestStop() {
        stop = true;
    }
}

public class Stopping {
    public static void main(String[] args) {
        final CanStop stoppable = new CanStop();
        stoppable.start();
        new Timer(true).schedule(new TimerTask() {
            public void run() {
                System.out.println("Requesting stop");
                stoppable.requestStop();
            }
        }, 500); // run() after 500 milliseconds
    }
} ///:~