► public void init() : Initialization method called once by browser.

► public void start() : Method called after init() and contains code to start processing. If the user leaves the page and returns without killing the current browser session, the start () method is called without being preceded by init ().

► public void stop() : Stops all processing started by start (). Done if user moves off page.

► public void destroy() : Called if current browser session is being terminated. Frees all resources used by applet.