Java-I-ch02_quiz01

What is a variable in Java?

• • A) A storage location in memory

• • B) A data type in Java

• • C) A method that performs calculations

• • D) A reserved word in Java

Which of the following is a correct declaration of a variable in Java?

• • A) int num = 100;

• • B) 100 = int num;

• • C) num int = 100;

• • D) int 100 = num;

What is the result of the following code?

• 10

• 20

• 30

• 40

Which operator is used to find the remainder after division in Java?

• /

• #

• %

• ++

• 3

• 5

• 8

• 15

Which data type should be used to store a number with a decimal in Java?

• int

• double

• char

• boolean

What does the following code print?

• 3

• 3.3333

• 3.0

• Error

What is the result of the expression 10 % 3 in Java?

• 0

• 1

• 2

• 3

What is the purpose of the ++ operator in Java?

• • A) To add two variables

• • B) To multiply a variable by 2

• • C) To increment a variable by 1

• • D) To perform a division operation

Which of the following correctly initializes a variable num with the value 5 in Java?

• • A) int num = 5;

• • B) int num = "5";

• • C) int num == 5;

• • D) int num = '5';