Question 1

What keyword is used to print a message to the console in Java?

Accepted Answer

System.out.println()

Answer

console.log()

Answer

print()

Answer

writeMessage()

Question 2

Which data type is used to store a decimal value in Java?

Accepted Answer

double

Answer

int

Answer

float

Answer

string

Question 3

What does the modulus operator (%) do in Java?

Accepted Answer

It gives the remainder after division

Answer

It multiplies two numbers

Answer

It divides two numbers

Answer

It adds two numbers

Question 4

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

Accepted Answer

int number = 10;

Answer

int number : 10;

Answer

int number = '10';

Answer

int 10 = number;

Question 5

What is the output of the expression (5 == 5)?

Accepted Answer

true

Answer

0

Answer

undefined

Answer

false

Question 6

What does the 'if' statement do in Java?

Accepted Answer

It executes code based on a condition being true

Answer

It creates a loop

Answer

It always runs the code inside it

Answer

It defines a function

Question 7

What is a class in Java?

Accepted Answer

A blueprint for creating objects

Answer

A built-in data type

Answer

A method of sorting

Answer

A type of loop

Question 8

Which of the following correctly creates an ArrayList in Java?

Accepted Answer

ArrayList list = new ArrayList<>();

Answer

ArrayList list = new ArrayList<String>();

Answer

ArrayList<String> list;

Answer

ArrayList<String> list = ArrayList();

Question 9

What does the 'length' property of an array return?

Accepted Answer

The number of elements in the array

Answer

The sum of all elements

Answer

The first element of the array

Answer

The type of the array

Question 10

What is the purpose of the 'for each' loop in Java?

Accepted Answer

To iterate over each item in an array or collection

Answer

To create a new array

Answer

To perform an arithmetic operation

Answer

To define a function

Question 11

What statement is used to print 'Hello Sunshine' to the console in Java?

Accepted Answer

System.out.println

Answer

Console.log('Hello Sunshine')

Answer

echo 'Hello Sunshine'

Answer

print('Hello Sunshine')

Question 12

Which of the following is NOT a type of variable in Java?

Accepted Answer

character

Answer

integer

Answer

double

Answer

string

Question 13

What does '10 % 3' return in Java?

Accepted Answer

1

Answer

3

Answer

10

Answer

0

Question 14

What is the result of comparing two strings with '==' in Java?

Accepted Answer

False (if they are different objects)

Answer

True

Answer

Undefined

Answer

False

Answer

Null

Question 15

How do you access the last element of an array in Java?

Accepted Answer

array.length - 1

Answer

array[length]

Answer

array[length + 1]

Answer

array.last()

Question 16

What is a constructor in Java?

Accepted Answer

A method that initializes an object

Answer

A variable declaration

Answer

A type of loop

Answer

A type of conditional statement

Question 17

Which loop is best for a known number of iterations?

Accepted Answer

for loop

Answer

do-while loop

Answer

while loop

Answer

nested loop

Question 18

What keyword is used to define a method that does not return a value?

Accepted Answer

void

Answer

int

Answer

empty

Answer

null

Question 19

In Java, what is the purpose of the 'break' statement?

Accepted Answer

To exit a loop or switch statement

Answer

To pause execution

Answer

To define a method

Answer

To skip the current iteration

Question 20

What is the output of the following code: 'int x = 5; System.out.println(x++);'?

Accepted Answer

5

Answer

5.0

Answer

6

Answer

Error

Question 21

What does the statement 'System.out.println' do in Java?

Accepted Answer

Prints a message to the console

Answer

Stores a message in memory

Answer

Ends the program

Answer

Creates a new variable

Question 22

In Java, which of the following is the correct way to declare a String variable?

Accepted Answer

String name = "John";

Answer

String name : "John";

Answer

String name = John;

Answer

String name = 'John';

Question 23

Which operator is used to find the remainder after division?

Accepted Answer

Modulus operator (%)

Answer

Addition operator (+)

Answer

Division operator (/)

Answer

Assignment operator (=)

Question 24

In Java, what type of variable is used to store true or false values?

Accepted Answer

Boolean

Answer

Double

Answer

Integer

Answer

String

Question 25

What will the output be if the condition '5 < 3' is evaluated in Java?

Accepted Answer

false

Answer

0

Answer

1

Answer

true

Question 26

Which statement is true regarding 'for' loops in Java?

Accepted Answer

'For' loops are used when the number of iterations is known beforehand

Answer

'For' loops do not require a counter

Answer

They can only iterate through arrays

Answer

'For' loops cannot have nested conditions

Question 27

What is the purpose of a constructor in a Java class?

Accepted Answer

To initialize object properties

Answer

To define methods

Answer

To create variables

Answer

To execute loops

Question 28

When comparing two string literals with '==' in Java, what does it compare?

Accepted Answer

Memory address of the strings

Answer

The actual content of the strings

Answer

Value of the script

Answer

String length

Question 29

What is the default value of an integer in an array in Java?

Accepted Answer

0

Answer

-1

Answer

null

Answer

1

Question 30

What is the purpose of the 'Math.random()' method in Java?

Accepted Answer

To generate a random decimal number between 0.0 and 1.0

Answer

To round a number

Answer

To get a random integer

Answer

To calculate the square root

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