private synchronized void notifyZoomListeners(ZoomEvent e){
  for (  ZoomListener listener : mZoomListeners) {
    listener.zoomApplied(e);
  }
}

private synchronized void notifyZoomListeners ( ZoomEvent e ) { for ( ZoomListener listener : mZoomListeners ) { listener . zoomApplied ( e ) ; } }
notify the zoom listeners about a zoom change .
