Suspending a thread in java pgm

Suspending a thread

public class SleepingThread extends Thread

{

   private int countDown = 5;

   private static int threadCount = 0;

   public SleepingThread()

  {

      super("" + ++threadCount);

      start();

   }

   public String toString()

  {

      return "#" + getName() + ": " + countDown;

   }

   public void run()

   {

      while (true)

      {

         System.out.println(this);

         if (--countDown == 0)

         return;

         try

         {

            sleep(100);

         }

         catch (InterruptedException e)

        {

            throw new RuntimeException(e);

         }

      }

   }

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

   {

      for (int i = 0; i < 5; i++)

      new SleepingThread().join();

      System.out.println("The thread has been suspened.");

   }

}