//file: ObserveImage.javaimport java.awt.*;public class ObserveImage extends java.applet.Applet {  Image img;  public void init(  ) {    img = getImage( getClass(  ).getResource(getParameter("img")) );    MyObserver mo = new MyObserver(  );    img.getWidth( mo );    img.getHeight( mo );    prepareImage( img, mo );  }  public void paint(Graphics g) {    g.drawImage(img, 0, 0, null);  }}