listener.imageUpdate(this, image, minX, minY, width, height, periodX, periodY, bands);
listener.imageUpdate(this, image, minX, minY, width, height, periodX, periodY, bands); }
  protected void processImageUpdate(BufferedImage image, int minX, int minY,				    int width, int height, int periodX,				    int periodY, int[] bands)  {    Iterator it = updateListeners.iterator();    while (it.hasNext())      {	IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next();	listener.imageUpdate(this, image, minX, minY, width, height, periodX,			     periodY, bands);      }  }