Suspending and Resuming a Thread

Here is a Java Program to Suspending and resuming a thread

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();
  }
}

class SuspendResume {
  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.");
  }
}

Output of Above Java Program
New thread: Thread[One,5,main]
New thread: Thread[Two,5,main]
One: 15
Two: 15
Two: 14
One: 14
One: 13
Two: 13
Two: 12
One: 12
One: 11
Two: 11
One: 10
Two: 10
Suspending thread One
Two: 9
Two: 8
Two: 7
Two: 6
Resuming thread One
One: 9
Suspending thread Two
One: 8
One: 7
One: 6
One: 5
Two: 5
Resuming thread Two
One: 4
Waiting for threads to finish.
Two: 4
One: 3
One: 2
Two: 3
One: 1
Two: 2
Two: 1
One exiting.
Two exiting.
Main thread exiting.