Java join() methos example

This  program  give  the details  how  thread  join() method  works in java.In this program  we have  created three threads and  make it sleep so that other Thread can start and run  . While  the old thread  sleep after the start. 






class  Threadmmy  extends Thread  

{  

  

public  void  run() {

for( int i=0 ; i<3 ; i++) {

System.out.println(" Produced");

try {

Thread.sleep(400);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

System.out.println("Thread ended: "+ Thread.currentThread().getName());

}

  }

}

  class JoinMethodThread {

    

    public static void main(String[]args) throws InterruptedException  

    {  

    Threadmmy  t1 = new Threadmmy ();  

    Threadmmy  t2 = new Threadmmy (); 

    Threadmmy  t3 = new Threadmmy (); 

    

        // this will call run() method  

    

    // t2.setPriority(Thread.MAX_PRIORITY);

    

      t1.start();

      t2.start();

      t2.join();

      t1.join();

      t3.start();

      t3.join();

      

     

          // System.out.println(Thread.currentThread().getName() + " in control");  

        

    }  

    

     

    

    

}

This   program  will  have this kind of output . You can  how  threads  starts and ends the execution. Thread t1  sleeps and then t2 join without all loop compilations.Code out put gives all deatils of join() methid.

 Produced

 Produced

Thread ended: Thread-0

 Produced

Thread ended: Thread-1

 Produced

Thread ended: Thread-0

 Produced

Thread ended: Thread-1

 Produced

Thread ended: Thread-0

Thread ended: Thread-1

 Produced

Thread ended: Thread-2

 Produced

Thread ended: Thread-2

 Produced

Thread ended: Thread-2