package mytask; public class Task { public static void main(String[] args) { DeadThread thread = new DeadThread(); Thread t1 = new Thread(thread); t1.setName("a"); Thread t2 = new Thread(thread); t2.setName("b"); t1.start(); t2.start(); } } class DeadThread implements Runnable{ private String o1= new String("o1"); private String o2 = new String("o2"); @Override public void run() { if(Thread.currentThread().getName().equals("a")){ synchronized(o1){ System.out.println("a thread enter outer monitor o1...."); try{ Thread.sleep(3000); System.out.println("a waiting for o2 monitor..."); synchronized(o2){ System.out.println("a thread enter inner monitr o2"); } }catch(InterruptedException e){ e.printStackTrace(); } } }else{ synchronized(o2){ System.out.println("b thread enter outer monitor o1...."); try{ Thread.sleep(3000); System.out.println("b waiting for o1 monitor..."); synchronized(o1){ System.out.println("b thread enter inner monitr o1"); } }catch(InterruptedException e){ e.printStackTrace(); } } } } }