Question 1

Which of the following is a valid data type in Java?

Accepted Answer

int

Answer

string

Answer

character

Answer

decimal

Question 2

What keyword is used to define a class in Java?

Accepted Answer

class

Answer

object

Answer

define

Answer

create

Question 3

Which of the following is the correct syntax to print 'Hello, World!' in Java?

Accepted Answer

System.out.println('Hello, World!');

Answer

print('Hello, World!');

Answer

echo('Hello, World!');

Answer

console.log('Hello, World!');

Question 4

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

Accepted Answer

false

Answer

0

Answer

null

Answer

true

Question 5

Which symbol is used to represent comments in a single line in Java?

Accepted Answer

//

Answer

//*

Answer

#

Answer

/*

Answer

///

Question 6

Which of the following methods is used to start the execution of a Java program?

Accepted Answer

main

Answer

start

Answer

run

Answer

execute

Question 7

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

Accepted Answer

To allow a method or variable to be accessed without creating an instance of the class

Answer

To indicate a variable has a fixed value

Answer

To create multiple instances of a class

Answer

To prevent a variable from being modified

Question 8

Which data structure in Java is used to store a fixed-size sequential collection of elements of the same type?

Accepted Answer

Array

Answer

List

Answer

Map

Answer

Set

Question 9

What is the purpose of a constructor in Java?

Accepted Answer

To initialize objects

Answer

To create new data types

Answer

To define static methods

Answer

To handle exceptions

Question 10

What keyword is used to inherit a class in Java?

Accepted Answer

extends

Answer

derives

Answer

implements

Answer

inherits

Question 11

What is the purpose of the 'main' method in a Java program?

Accepted Answer

It serves as the entry point for the program execution.

Answer

It defines the class structure.

Answer

It compiles the code.

Answer

It automatically imports libraries.

Question 12

Which of the following is a valid way to declare a variable in Java?

Accepted Answer

int count;

Answer

count int;

Answer

int: count;

Answer

var count;

Question 13

What keyword is used to create a new instance of a class in Java?

Accepted Answer

new

Answer

instance

Answer

create

Answer

make

Question 14

Which of the following data types is used to represent a whole number in Java?

Accepted Answer

int

Answer

float

Answer

boolean

Answer

char

Question 15

What symbol is used for comments in a single line in Java?

Accepted Answer

//

Answer

#

Answer

--

Answer

/*

Question 16

Which of the following statements is true about Java's garbage collection?

Accepted Answer

It automatically frees memory by removing unreferenced objects.

Answer

It only works on primitive data types.

Answer

It must be manually managed by the programmer.

Answer

It reduces the execution speed of the program.

Question 17

What is the output of the following Java code: 'System.out.println(5 + 3);'?

Accepted Answer

8

Answer

Invalid operation

Answer

15

Answer

53

Question 18

What does the 'break' statement do in a loop in Java?

Accepted Answer

It terminates the loop and exits its block.

Answer

It pauses the loop for a moment.

Answer

It skips to the next iteration.

Answer

It restarts the loop from the beginning.

Question 19

Which of the following keywords is used to inherit a class in Java?

Accepted Answer

extends

Answer

derives

Answer

implements

Answer

inherits

Question 20

What will happen if you try to divide an integer by zero in Java?

Accepted Answer

It will throw an ArithmeticException.

Answer

It will return zero.

Answer

It will return infinity.

Answer

It will compile successfully.

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