suspend

class thread implements Runnable
{
String name;
Thread t;
boolean condition=false;
      thread(String n)
      {
          name=n;
          t=new Thread(this,name);
          t.start();
      }
      public void run()
      {try{
          for(int i=0;i<10;i++)
          {
              System.out.println(name +" :"+i);
              Thread.sleep(200);
              synchronized(this)
              {
                  while(condition)
                      wait();
              }
          }
      }catch(InterruptedException e)
      {
          System.out.println("error in run");
      }
      System.out.println("exiting...");
      }
       void mysuspend()
    {
           //System.out.println(name+":suspending");
          condition=true;
      }
      synchronized void myresume()
      {
          //System.out.println(name+":resuming");
          condition=false;
          notify();
      }


}
public class suspend {

    public static void main(String argv[])
    {
        thread ob1=new thread("one");
        thread ob2=new thread("two");
        try{
            Thread.sleep(1000);
            ob1.mysuspend();
            System.out.println("thread 1 suspened");
            Thread.sleep(1000);
            ob1.myresume();
            System.out.println("thread 1 resuming");
            Thread.sleep(1000);
            ob2.mysuspend();
            System.out.println("thread 2 suspened");
            Thread.sleep(1000);
            ob2.myresume();
            System.out.println("thread 2 resuming");

        }catch(InterruptedException e)
        {
            System.out.println("error in main");
        }
        try{
            ob1.t.join();
            ob2.t.join();
        }catch(InterruptedException e)
        {
            System.out.println("error in joining");
        }

    }
}