Timer/ TimerTask

[Jaan Smith]

How to schedule a timer only once. and when done with the task, the program should terminate. In my program the program does not terminates.
Thaks in Advance
Jaan

 import java.util.Timer;
import java.util.TimerTask;
import java.util.Date;
 
class Task extends TimerTask
{
   private String name = null;
 
   public Task(String name){
   this.name = name;
   }
   public void run()
    {
       System.out.println("*********every 7 sec ********** print my name-->"+name);
 
    }
}
 

public class Scheduler{
 

 public static void main(String[] argc){
 
     System.out.println("Wait for 7 second");
 Scheduler s1 = new Scheduler();
 s1.t();
 

 
 }
 public void t(){
    Timer timer = new Timer();
    Task task = new Task("My Name");
    timer.schedule(task, 5000);
 
}
}   

[Deepak Bala]

Many ways. Do a Thread.sleep() or object.wait() instead of a timer. Or perform a system.exit(0) once you are done printing your name.

[Jaan Smith]

The solution would be to cancel the timer in run method.

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

 

class Task extends TimerTask
{
   private Timer timer = null;
   private String name = null;
 
   public Task(String name, Timer t){
   this.name = name;
   this.timer = t;
   }
   public void run()
    {
       System.out.println("*********every 5 sec ********** print my name-->"+name);
       timer.cancel();
 
    }
}
 
public class Scheduler{
 

 public static void main(String[] argc){
 
     System.out.println("Wait for 7 second");
 Scheduler s1 = new Scheduler();
 s1.t();
 System.out.println("after the timer");
 

 
 }
 public void t(){
    Timer timer = new Timer();
    Task task = new Task("My Name", timer);
    timer.schedule(task, 5000);
    //timer.cancel();
 
}
}