:
public int countStackFrame() always returns the number of stack frames
regardless of the thread status (suspended or unsuspended).


---code----
class runitforever implements Runnable {
  public void run() {
    while ( true ) {
      System.out.println("run it?");
      if (Math.random() < 0.77)
// yield to others sometimes
Thread.yield();
    try {
      Thread.currentThread().countStackFrames();
    } catch ( IllegalStateException test_e) {
      //exception_count++;
      System.out.println("IllegalStaeException thrown by countStackFrame() is caught");
    }

    }
  }
}

class threadtest03 {
  public static void main( String args[] ) {

   runitforever rt = new runitforever();

    Thread pt = new Thread(rt);



    pt.start();

    Thread.sleep(100);



    //countStackFrames() when it is not suspended
    try {
      if ( pt.countStackFrames() > 0 ) System.out.println("ok");
    } catch ( IllegalStateException test_e) {
      exception_count++;
      System.out.println("IllegalStaeException thrown by countStackFrame() is aught");
    }
}