Quiz

Review today's material by taking this three-question quiz.

Questions

1:What operator is used to call an object's constructor method and create a new object?

  1. +

  2. new

  3. instanceof

2:What kind of methods apply to all objects of a class rather than an individual object?

  1. Universal methods

  2. Instance methods

  3. Class methods

3:If you have a program with objects named obj1 and obj2 , what happens when you use the statement obj2 = obj1 ?

  1. The instance variables in obj2 are given the same values as obj1.

  2. obj2 and obj1 are considered to be the same object.

  3. Neither (a) nor (b).

Answers

A1: b.
A2: c.
A3: a. The = operator does not copy values from one object to another. Instead, it makes both variables refer to the same objectc

Get Sams Teach Yourself Java 2 in 21 Days, Second 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