Thread java timer

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

public class Test {

    static int counter = 0;
    static Timer timer;

    public static void main(String[] args) {

        //create timer task to increment counter
        TimerTask timerTask = new TimerTask() {

            @Override
            public void run() {
                // System.out.println("TimerTask executing counter is: " + counter);
                counter++;
            }
        };

        //create thread to print counter value
        Thread t = new Thread(new Runnable() {

            @Override
            public void run() {
                while (true) {
                    try {
                        System.out.println("Thread reading counter is: " + counter);
                        if (counter == 3) {
                            System.out.println("Counter has reached 3 now will terminate");
                            timer.cancel();//end the timer
                            break;//end this loop
                        }
                        Thread.sleep(1000);
                    } catch (InterruptedException ex) {
                        ex.printStackTrace();
                    }
                }
            }
        });

        timer = new Timer("MyTimer");//create a new timer
        timer.scheduleAtFixedRate(timerTask, 30, 3000);//start timer in 30ms to increment  counter

        t.start();//start thread to display counter
    }
}

Source: stackoverflow.com

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