Chapter 2

Question 1

What is true if more than one class is in a source code file.

Answer 1

Only one of them may be public

Question 2

Java API

Answer 2

The standard Java library

Question 3

The System class in Java contains

Answer 3

Methods and objects that perform system-level tasks.

Question 4

How character data is stored in Java

Answer 4

Unicode Characters

Question 5

What keyword in Java indicates a constant value

Answer 5

final
final int CAL_SALES_TAX;

Question 6

Primitive variables

Answer 6

Contain the value of that they have been assigned; int and float.

Question 7

Reference variables

Answer 7

Contain the memory address of the object’s location; strings, other objects.