Section 10.1 Introduction
• Polymorphism (p. 396) enables us to write programs that process objects that share the same superclass as if they were all objects of the superclass; this can simplify programming.
• With polymorphism, we can design and implement systems that are easily extensible. The only parts of a program that must be altered to accommodate new classes are those that require direct knowledge of the new classes that you add to the hierarchy.
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