Chapter 1

Consider the following code segment.

System.out.print("Java is ");

System.out.println("fun ");

System.out.print("and cool!");

What is printed as a result of executing the code segment?

• Java is fun and cool!

• Java isfun and cool!

• Java is fun and cool!

• Java is fun and cool!

Consider the following code segment.

System.out.println("Roses are red, ") // Line 1;

System.out.println("Violets are blue, ") // Line 2;

System.out.print("Unexpected '}' ") // Line 3;

System.out.print("on line 32. ") // Line 4;

The code segment is intended to produce the following output but may not work as intended.

Roses are red,

Violets are blue,

Unexpected '}' on line 32.

Which change, if any, can be made so that the code segment produces the intended output?

• Replacing print with println on lines 3 and 4.

• Replacing println with print on lines 1 and 2.

• Removing the single quotes in line 3.

• Putting the semicolon after the ) on each line.

What type should you use to represent the average grade for a course?

• int

• double

• boolean

• String

What type should you use to represent the number of people in a household?

• int

• double

• boolean

• String

What type should you use to hold the first name of a person?

• int

• double

• boolean

• String

What type should you use to record if it is raining or not?

• int

• double

• boolean

• String

What type should you use to represent the amount of money you have?

• int

• double

• boolean

• String

Which of the following pairs of declarations are the most appropriate to store a student’s average course grade in the variable GPA and the number of students in the variable numStudents?

• int GPA; int numStudents;

• double GPA; int numStudents;

• double GPA; double numStudents;

• int GPA; boolean numStudents;

• double GPA; boolean numStudents;

What are the values of x, y, and z after the following code executes?

int x = 0;

int y = 1;

int z = 2;

x = y;

y = y * 2;

z = 3;

• x = 0, y = 1, z = 2

• x = 1, y = 2, z = 3

• x = 2, y = 2, z = 3

• x = 0, y = 0, z = 3

What is the result of 158 % 10?

• 15

• 16

• 8