public class MyRunnable implements Runnable {
   int a=0; public void run(){
   for(a=0;a<10;a++){
   try{Thread.sleep(100);}catch(Exception e){}           System.out.println(Thread.currentThread().getName()+":"+a);         }     } public static void main(String[] args)     {
           MyRunnable mr=new MyRunnable();         Thread t1=new Thread(mr);         Thread t2=new Thread(mr);         t1.start();         t2.start();     } }