Java Foundations 2

Question 1

What are the primitive data types in Java?

Answer 1

The primitive data types in Java are byte, short, int, long, float, double, char, and boolean.

Question 2

True or False: Numeric literals can include underscores for better readability.

Answer 2

True

Question 3

Fill in the blank: The _______ type is used to represent a single 16-bit Unicode character in Java.

Answer 3

char

Question 4

Which of the following is NOT a primitive data type? (a) int (b) String (c) boolean

Answer 4

b) String

Question 5

What is the purpose of using underscores in numeric literals?

Answer 5

Underscores in numeric literals improve readability by separating groups of digits.

Question 6

Short Answer: What is the maximum value of a byte in Java?

Answer 6

The maximum value of a byte in Java is 127.

Question 7

True or False: String is a primitive data type in Java.

Answer 7

False

Question 8

Fill in the blank: The data type used to represent true/false values in Java is _______.

Answer 8

boolean

Question 9

What is the syntax to declare a String variable in Java?

Answer 9

String variableName = “value”;

Question 10

Multiple Choice: Which of the following correctly uses underscores in a numeric literal? (a) 1000 (b) 1000 (c) 1__000

Answer 10

(a) 1_000