Java Quiz_1 - Unique Foundation

Welcome to your JAVA Quiz

1.

Which method must be implemented by all threads in Java?

start()

execute()

run()

2.

Which keyword is used to define a class in Java?

define

class

module

3.

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

ArithmeticException

NumberFormatException

NullPointerException

4.

What is the size of an int variable in Java?

8 bits

32 bits

16 bits

5.

Which of the following is not a valid Java identifier?

myVar

$var

2var

6.

Which keyword is used to inherit a class in Java?

implements

inherits

extends

7.

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

false

true

8.

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

int[] arr;

Both

int arr[];

9.

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

To prevent method overriding

Both

To create a constant variable

10.

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

boolean

int

String

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