Monitoring a Thread in java pgm

Monitoring a Thread

class MyThread extends Thread

{

   boolean waiting= true;

   boolean ready= false;

   MyThread(){}

   public void run()

  {

      String thrdName = Thread.currentThread().getName();

      System.out.println(thrdName + " starting.");

      while(waiting)

      System.out.println("waiting:"+waiting);

      System.out.println("waiting...");

      startWait();

      try

      {

         Thread.sleep(1000);

      }

      catch(Exception exc)

     {

         System.out.println(thrdName + " interrupted.");

      }

      System.out.println(thrdName + " terminating.");

   }

   synchronized void startWait()

  {

      try

     {

         while(!ready) wait();

      }

      catch(InterruptedException exc)

     {

         System.out.println("wait() interrupted");

      }

   }

   synchronized void notice()

   {

      ready = true;

      notify();

   }

}

public class Main

 {

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

   {

      MyThread thrd = new MyThread();

      thrd.setName("MyThread #1");

      showThreadStatus(thrd);

      thrd.start();

      Thread.sleep(50);

      showThreadStatus(thrd);

      thrd.waiting = false;

      Thread.sleep(50);

      showThreadStatus(thrd);

      thrd.notice();

      Thread.sleep(50);

      showThreadStatus(thrd);

      while(thrd.isAlive())

      System.out.println("alive");

      showThreadStatus(thrd);

   }

   static void showThreadStatus(Thread thrd)

   {

      System.out.println(thrd.getName()+"

      Alive:="+thrd.isAlive()+"

      State:=" + thrd.getState() );

   }

}