Hi, may I know is there any technique avaible, for pausing/ resuming
execution of the thread, which is inside while loop, by using tools
from java.util.concurrent.

1) I do not want to use busy pooling, it is ugly and wasting CPU
resource.

2) Is the following a proven bug free method?

public synchronized void pauseWork() {
   request = PAUSE;
   notify();
}

public synchronized void resumeWork() {
   if (request == PAUSE) {
       request = RESUME;
       notify();
   }
}

private void waitIfPauseRequest()
       throws InterruptedException {

   synchronized (this) {
       if (request == PAUSE) {
           while (request != RESUME) {
               wait();
           }

           request = NORMAL;
       }
   }
}