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You create subclasses of the JComponent class so that you can shadow the
paint method of the JComponent class. For example, you might
define the Meter class, anticipating that your new class will evolve
into a meter display.
*------------------------* *-----------------------* | Meter class | | JComponent Class | | | extends | | | You supply a shadowing |---------->| Java supplies a basic | | definition for paint | | definition for paint | *------------------------* *-----------------------*