What will be the output of the following program?
public class WaitAndNotify extends Thread {
public static void main(String[] args) {
WaitAndNotify wan = new WaitAndNotify();
print("A"); wan.start();
print("B"); wan.doWait(20000);
print("C"); wan.doWait(1);
print("D"); wan.doWait(50000);
print("E");
}
public void doWait(long l) {
synchronized (this) {
try { wait(l); } catch (Exception e) { print("X"); }
}
}
public void doNotify() { synchronized (this) { notify(); } }
public void doNotifyAll() { synchronized (this) { notifyAll(); } }
public static void print(String s) { System.out.print(s + " - "); }
public void run() {
try {
Thread.sleep(5000);
print("M"); doNotify();
Thread.sleep(2000);
print("N"); doNotifyAll();
} catch (Exception e) { print("Y"); }
}
}
Source File and Java File
