public void stop(){
  _throttle.setSpeedSetting(-0.5F);
  _throttle.setSpeedSetting(0.0F);
  stopLabel.setIcon(stopIcon);
  stopLabel.setIconTextGap(_gap);
  pack();
}

public void stop ( ) { _throttle . setSpeedSetting ( - 0.5F ) ; _throttle . setSpeedSetting ( 0.0F ) ; stopLabel . setIcon ( stopIcon ) ; stopLabel . setIconTextGap ( _gap ) ; pack ( ) ; }
perform an emergency stop
