import java.util.Timer;
import java.util.TimerTask;
import java.util.Calendar;
import java.util.GregorianCalendar;

// Unlike Swing Timers, general-purpose Timers each use their
//  own, separate, independent thread
public class TimersThreadsTimerTask
{
	Timer timer1 = new Timer();
	Timer timer2 = new Timer();
	Timer timer3 = new Timer();

	public static void main(String[] args)
	{
		new TimersThreadsTimerTask();
	}

	// Constructor:  Start three Timers (threads) running simultaneously 
	public TimersThreadsTimerTask()
	{
		// Alternate method:  Set a 'Date' object to today at 10:42:00 p.m.
/*		Calendar calendar = Calendar.getInstance();       
		calendar.set(Calendar.HOUR_OF_DAY, 22);
		calendar.set(Calendar.MINUTE, 42);
		calendar.set(Calendar.SECOND, 0);
		Date dayTime = calendar.getTime();
		timer1.schedule(new Task1(), dayTime);
*/
		// Set a 'Calendar' object to today at 10:42:00 p.m. 
		Calendar dayTime = new GregorianCalendar(new GregorianCalendar().get(Calendar.YEAR),
								 							  new GregorianCalendar().get(Calendar.MONTH),
								 							  new GregorianCalendar().get(Calendar.DATE), 22, 42);

		// Set the first Timer to run once at (or after) a specific date/time
		timer1.schedule(new Task1(), dayTime.getTime());

		// Wait for five seconds, and then run the second Timer once
		timer2.schedule(new Task2(), 5000);

		// Start the third Timer immediately, and then run it every two seconds
		timer3.schedule(new Task3(), 0, 2000);
	}

	public class Task1 extends TimerTask
	{
		public void run()
		{
			for (int counter = 1; counter <= 5; counter++)
				System.out.println("Task #1:  " + (counter));
		}
	}

	public class Task2 extends TimerTask
	{
		public void run()
		{
			for (int counter = 1; counter <= 5; counter++)
				System.out.println("Task #2:  " + (counter));
		}
	}

	public class Task3 extends TimerTask
	{
		int counter = 1;

		public void run()
		{
			System.out.println("Task #3:  " + (counter));

			// Stop this Timer after it has run five times
			if (counter++ == 5)
				timer3.cancel();
		}
	}
}