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Components 1--4 use only applet methods
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Components 5--10 extend applet functionality in terms of other classes: 5 uses threads, and 6--10 use AWT classes.
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Using AWT, each applet can be in fact extended to a full-blown interactive windowing application.
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Example: Overloading HotJava MenuBar.
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"item" is applet variable pointing to this applet window.
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Subsequent parents of this window (including the whole HotJava frame) can be extracted and customized.
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Hence, HotJava MenuBar can be customized and overloaded by applets (useful e.g. for developing and customizng educational browsers for various grades)
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