Chapter1.1

1. Consider the following code segment.

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

   System.out.println("fun ");

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

3. 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.

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

Roses are red,

Violets are blue,

Unexpected '}' on line 32.

• 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  courses?

• 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    ex 122.75?

• 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;

  
  

1. 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

  
  

  
  

1. What is the result of 158 % 10?

• 0

• 15
  

• 16

  
  

• 8