Quiz

To determine what kind of knowledge you inherited from the past hour's work, answer the following questions.

Questions

1:If a superclass handles a method in a way you don't want to use in the subclass, what can you do?

  1. Delete the method in the superclass.

  2. Override the method in the subclass.

  3. Write a nasty letter to the editor of the San Jose Mercury News hoping that Java's developers will read it.

2:What methods can be used to retrieve an element stored in a vector?

  1. get()

  2. read()

  3. elementAt()

3:What statement can you use to refer to the methods and variables of the current object?

  1. this

  2. that

  3. theOther

Answers

A1: b. Because you can override the method, you don't have to change any aspect of the superclass or the way it works.
A2: a. The get() method has ...

Get SAMS Teach Yourself Programming with Java™ in 24 Hours, FOURTH EDITION now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial