DIAGNOSTIC TEST: DATA TYPES AND VARIABLES IN JAVA

Question 1

What is the purpose of declaring a variable in Java?

Accepted Answer

To reserve memory space to store data

Question 2

What is a variable in programming?

Accepted Answer

A storage location with a specific name and data type

Question 3

In Java, the data type of a variable must be specified when declaring it.

Accepted Answer

True

Question 4

A variable name in Java can contain spaces.

Accepted Answer

False

Question 5

The value of a variable can change during program execution.

Accepted Answer

True

Question 6

Declaring a variable involves assigning an initial value to it.

Accepted Answer

False

Question 7

What is the result of adding two variables of type int in Java?

Accepted Answer

An integer

Question 8

Which data type is used to store whole numbers in Java?

Accepted Answer

int

Question 9

The data type "boolean" can only store two values: true or false.

Accepted Answer

True

Question 10

Which of the following is NOT a valid Java data type?

Accepted Answer

string

Questions 10