package Multi_Threading;

class X

{

synchronized void foo(Y y)

{

String name = Thread.currentThread().getName(); //get the name of current thread

System.out.println(name +" Entered X.foo"); // print statement

try { Thread.sleep(1000); }catch(InterruptedException e) {}

System.out.println(name + " trying to call Y.last()"); // print statement

y.last(); // will lock on this

}

synchronized void last()

{

System.out.println("Inside X.last");

}

}

class Y

{

synchronized void bar(X x)

{

String name = Thread.currentThread().getName();//get the name of current thread

System.out.println(name +" Entered Y.foo");// print statement

try { Thread.sleep(1000); }catch(InterruptedException e) {}

System.out.println(name + " trying to call X.last()");// print statement

x.last();// will lock on this

}

synchronized void last()

{

System.out.println("Inside Y.last");

}

}

public class ThreadDemo6 implements Runnable{

X x = new X();

Y y = new Y();

ThreadDemo6()

{

Thread.currentThread().setName("MainThread"); //set thread name as "MainThread"

Thread t = new Thread(this,"RacingThread"); // Creating another Thread with name as RacingThread

t.start(); // starting Racing thread

x.foo(y); //Thread run by MainThread

System.out.println("Back in the Main Thread");

}

public void run()

{

y.bar(x); //Thread run by Racing Thread

System.out.println("Back in the Another Thread");

}

public static void main(String[] args) {

new ThreadDemo6(); // calling constructor

}

}