REMINDER.JAVA
import java.util.Timer;
import java.util.TimerTask;

/**
 * Simple demo that uses java.util.Timer to schedule a task to execute
 * once x seconds have passed.
 */

public class Reminder {
    Timer timer;

    public Reminder(int seconds) {
        timer = new Timer();//creates new time
        timer.schedule(new RemindTask(), seconds*1000);//delay is in milliseconds
    }

    class RemindTask extends TimerTask {
        public void run() {
            System.out.format("Time's up!%n");
            timer.cancel(); //Terminate the timer thread
        }
    }

}

DRIVER.JAVA

public class Driver {
         public static void main(String args[]) {
                        System.out.format("About to schedule task.%n");//output
                        System.out.format("Task scheduled.%n");//output
                        new Reminder (3); //call Reminder.java for timer with 3 seconds
                    }
}