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// : 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
}
} ///:~
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