Polymorphism - Java Software Solutions: Foundations of Program Design - page 534

EX 10.2 Draw and annotate a class hierarchy that represents various
types of animals in a zoo. Show what characteristics would be
represented in the various classes of the hierarchy. Explain how
polymorphism could play a role in guiding the feeding of the
animals.
EX 10.3 Draw and annotate a class hierarchy that represents various
types of sales transactions in a store (cash, credit, etc.). Show
what characteristics would be represented in the various classes
of the hierarchy. Explain how polymorphism could play a role
in the payment process.
EX 10.4 What would happen if the pay method were not defined as an
abstract method in the StaffMember class of the Firm program?
EX 10.5 Explain how a call to the addMouseListener method represents
a polymorphic situation.
EX 10.6 Draw the containment hierarchy tree for the SlideColor program.

Programming Projects

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Projects online and get instant feedback.
PP 10.1 Modify the Firm example from this chapter such that it accom-
plishes its polymorphism using an interface called Payable .
PP 10.2 Modify the Firm example from this chapter such that all employ-
ees can be given different vacation options depending on their
classification. Modify the driver program to demonstrate this new
functionality.
PP 10.3 Implement the Speaker interface described in Section 10.3, and
create three classes that implement Speaker in various ways.
Create a driver class whose main method instantiates some of
these objects and tests their abilities.
PP 10.4 Rewrite the Sorting class so that both sorting algorithms put
the values in descending order. Create a driver class with a main
method to exercise the modifications.
PP 10.5 Modify the Movies program from Chapter 8 so that it keeps the
DVDs sorted by title.

VideoNote

Developing a solution
of PP 10.1.