code: public static void main(String[] args) throws IOException
      {
          MonaLisaApplet gui = new MonaLisaApplet();
          // If a URL is specified as an argument, use that image.  Otherwise use the default Mona Lisa picture.
          URL imageURL = args.length > 0
                         ? new URL(args[0])
                         : MonaLisaApplet.class.getClassLoader().getResource(IMAGE_PATH);
          gui.targetImage = ImageIO.read(imageURL);
          gui.displayInFrame("Watchmaker Framework - Mona Lisa Example");
      }
docs: Entry point for running this example as an application rather than an applet.
  @param args Program arguments (ignored).
  @throws IOException If there is a problem loading the target image.