INHERITANCE AND POLYMORPHISM - Introduction to Java Programming: Comprehensive Version - page 409

CHAPTER

11

I NHERITANCE

AND P OLYMORPHISM

Objectives

To define a subclass from a superclass through inheritance (§11.2).

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To invoke the superclass's constructors and methods using the super
keyword (§11.3).

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To override instance methods in the subclass (§11.4).

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To distinguish differences between overriding and overloading
(§11.5).

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To explore the toString() method in the Object class (§11.6). ■

To discover polymorphism and dynamic binding (§§11.7-11.8).

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To describe casting and explain why explicit downcasting is necessary
(§11.9).

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To explore the equals method in the Object class (§11.10).

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To store, retrieve, and manipulate objects in an ArrayList (§11.11).

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To construct an array list from an array, to sort and shuffle a list, and
to obtain max and min element from a list (§11.12).

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To implement a Stack class using ArrayList (§11.13).

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To enable data and methods in a superclass accessible from subclasses
using the protected visibility modifier (§11.14).

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To prevent class extending and method overriding using the final
modifier (§11.15).

■