Java Quiz_1

Welcome to your JAVA Quiz

1.

Which exception is thrown when a division by zero is attempted in Java?

NullPointerException

NumberFormatException

ArithmeticException

2.

Which of the following is not a primitive data type in Java?

boolean

String

int

3.

Which keyword is used to inherit a class in Java?

implements

extends

inherits

4.

Which method must be implemented by all threads in Java?

execute()

run()

start()

5.

What is the size of an int variable in Java?

16 bits

32 bits

8 bits

6.

Which of the following is not a valid Java identifier?

$var

myVar

2var

7.

What is the default value of a boolean variable in Java?

false

true

8.

What is the purpose of the 'final' keyword in Java?

Both

To create a constant variable

To prevent method overriding

9.

Which of the following is a valid declaration of an array in Java?

Both

int arr[];

int[] arr;

10.

Which keyword is used to define a class in Java?

define

module

class

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