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Object-oriented
solutions are designed based on an
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inheritance
hierarchy which defines the relationships
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between
classes, where one class shares the structure
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and/or
behavior of one or more classes.
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To
provide this type of design requires that we understand
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how
to implement such relationships between objects.
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Therefore,
our first step in understanding object-oriented
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programming
is to learn the syntax and semantics of
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inheritance
hierarchies.
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We
will also learn how to extend abstractions with new
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functionality
even when the code for those abstractions is
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not
available.
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