Every Container is a component since it is derived from Component; thus it can also behave and be
used like a Component. All of the methods in Component can be used in a Container. Container has two
direct subclasses, Window and Panel. They are discussed below.
16.3.3 The Panel Class
Panel is the simplest container class because Container class is the superclass for Panel class. A panel
provides space in which an application can attach any other component, including other panels. A Panel
is a container that does not exist independently. The Applet class is a subclass of Panel, and as has been
seen, as applet does ...
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