Anstoßen mit SensorListeners

u import josx.platform.rcx.*;

class CollisionDetector implements SensorListener {

  public void stateChanged
        (Sensor s, int oldVal, int newVal) {

    if( (newVal > 80) && (oldVal < 80) ) {
      synchronized(s) {
        s.notifyAll();
      }
    }

  }
}