Answer Posted / nachiyappan

class A {

synchronized void foo(B b) {
String name = Thread.currentThread().getName();
System.out.println(name + " entered A.foo");
try {
Thread.sleep(1000);
} catch (Exception e) {
System.out.println("A Interrupted");
}
System.out.println(name + " trying to call
B.last()");
b.last();
}

synchronized void last() {
System.out.println("Inside A.last");
}
}

class B {

synchronized void bar(A a) {
String name = Thread.currentThread().getName();
System.out.println(name + " entered B.bar");
try {
Thread.sleep(1000);
} catch (Exception e) {
System.out.println("B Interrupted");
}
System.out.println(name + " trying to call
A.last()");
a.last();

}
synchronized void last() {
System.out.println("Inside A.last");
}
}

class Deadlock implements Runnable {

A a = new A();
B b = new B();

Deadlock() {
Thread.currentThread().setName("MainThread");
Thread t = new Thread(this, "RacingThread");
t.start();
a.foo(b); // get lock on a in this thread.
System.out.println("Back in main thread");
}

public void run() {
b.bar(a); // get lock on b in other thread.
System.out.println("Back in other thread");
}

public static void main(String args[]) {
new Deadlock();
}
}

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