class SuspendResume1 {

// Suspending and resuming a thread for Java 2

static class NewThread implements Runnable {

String name; // name of thread

Thread t;

boolean suspendFlag;

NewThread(String threadname) {

name = threadname;

t = new Thread(this, name);

System.out.println("New thread: " + t);

suspendFlag = false;

t.start(); // Start the thread

}

// This is the entry point for thread.

public void run() {

try {

for (int i = 15; i > 0; i--) {

System.out.println(name + ": " + i);

Thread.sleep(200);

synchronized (this) {

while (suspendFlag) {

wait();

}

}

}

} catch (InterruptedException e) {

System.out.println(name + " interrupted.");

}

System.out.println(name + " exiting.");

}

void mysuspend() {

suspendFlag = true;

}

synchronized void myresume() {

suspendFlag = false;

notify();

}

}

public static void main(String args[]) {

NewThread ob1 = new NewThread("One");

NewThread ob2 = new NewThread("Two");

try {

Thread.sleep(1000);

ob1.mysuspend();

System.out.println("Suspending thread One");

Thread.sleep(1000);

ob1.myresume();

System.out.println("Resuming thread One");

ob2.mysuspend();

System.out.println("Suspending thread Two");

Thread.sleep(1000);

ob2.myresume();

System.out.println("Resuming thread Two");

} catch (InterruptedException e) {

System.out.println("Main thread Interrupted");

}

// wait for threads to finish

try {

System.out.println("Waiting for threads to finish.");

ob1.t.join();

ob2.t.join();

} catch (InterruptedException e) {

System.out.println("Main thread Interrupted");

}

System.out.println("Main thread exiting.");

}

}