Provides the classes necessary to create an applet and the classes an applet
uses to communicate with its applet context.
The applet framework involves two entities: the applet and the
applet context. An applet is an embeddable window (see the Panel
class) with a few extra methods that the applet context can use to
initialize, start, and stop the applet.
The applet context is an application that is responsible for loading and
running applets. For example, the applet context could be a Web browser or an
applet development environment.