An applet can mix and match several UI types, depending on the kind of information it needs to give or get. Some applets play sounds , either to give the user feedback or to provide ambiance. Applets can get configuration information from the user through parameters that the applet defines.
Applets can get system information by reading system properties .
Some of the UI possibilities mentioned above are available only to applets. Some are available to applications, as well. Creating a GUI Applets use the AWT to create their GUIs. The Applet class and AudioClip interface provide support for playing sounds. Defining and Using Applet Parameters You can improve the versatility of your applet by providing user-definable parameters.