How to stop a running thread

Example for stopping the Running thread in simple java Coding

public class ThreadStop extends Thread {

private boolean running = true;

public void run() {

while (running) {

System.out.print(".");

System.out.flush();

try {

Thread.sleep(1000);

} catch (InterruptedException ex) {}

}

System.out.println("Shutting down thread");

}

public void shutdown() {

running = false;

}

public static void main(String[] args)

throws InterruptedException {

ThreadStop t = new ThreadStop();

t.start();

Thread.sleep(5000);

t.shutdown();

}

}