Java Quiz

Question 1

1/12

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

int

boolean

string

double

Answer

Compilation error

Answer

To continue to the next iteration of the loop

Answer

To throw an exception

Answer

To define a custom label for the loop

Answer

LinkedList

Answer

NullPointerException

Answer

ArithmeticException

Answer

IndexOutOfBoundsException

Answer

To prevent a method from being overridden

Answer

To declare a constant variable

Answer

To specify a default value for a variable

Answer

Code simplicity

Answer

Efficient memory usage

Answer

Exception handling

Answer

To compare two distinct objects

Answer

To compare two primitive data types

Answer

To check if an object is null

Question 2

2/12

What is the output of the following code snippet?

int x = 5;
System.out.println(x++);

4

5

6

Question 3

3/12

What is the main purpose of using 'break' statement in Java?

To terminate the current loop

Question 4

4/12

Which keyword is used to inherit a class in Java?

super

abstract

new

extends

Question 5

5/12

Which data structure provides a last-in, first-out (LIFO) ordering?

ArrayList

HashMap

Stack

Question 6

6/12

What is the default value of an instance variable in Java?

0

null

false

Depends on the data type

Question 7

7/12

Which exception is thrown when an array index is out of bounds?

ArrayIndexOutOfBoundsException

Question 8

8/12

What is the entry point method in a Java program?

start()

init()

main()

run()

Question 9

9/12

Which access modifier makes a class or method accessible within the same package?

protected

private

public

default

Question 10

10/12

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

To define a class that cannot be inherited

Question 11

11/12

What does the 'synchronized' keyword in Java ensure?

Thread safety

Question 12

12/12

What is the purpose of the 'equals()' method in Java?

To compare the content of two objects