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This quiz titled 'java ch10' assesses understanding of polymorphism in Java, covering concepts like interfaces, superclass-subclass relationships, and abstract classes. It is designed for learners to evaluate their grasp on...

Questions: 27 | Attempts: 1669 | Last updated: Mar 22, 2023

Sample Question 1
10.1 Q1: Polymorphism enables you to:

A. program in the general.

B. program in the specific.

C. absorb attributes and behavior from previous classes.

D. hide information from the user. d. hide information from the user.

Sample Question 2
10.1 Q2: Which of the following statements about interfaces is false?

A. An interface describes a set of methods that can be called on an object, providing a default implementation for the methods.

B. An interface describes a set of methods that can be called on an object, not providing concrete implementation for the methods.

C. Interfaces are useful when attempting to assign common functionality to possibly unrelated classes.

D. Once a class implements an interface, all objects of that class have an is-a relationship with the interface type.

Sample Question 3
10.2 Q1: For which of the following would polymorphism not provide a clean solution?

A. A billing program where there is a variety of client types that are billed with different fee structures.

B. A maintenance log program where data for a variety of types of machines is collected and maintenance schedules are produced for each machine based on the data collected.

C. A program to compute a 5% savings account interest for a variety of clients.

D. An IRS program that maintains information on a variety of taxpayers and determines who to audit based on criteria for classes of taxpayers.