Question 1

Which keyword is used to define a method in Java?

Accepted Answer

void

Answer

string

Answer

method

Answer

int

Question 2

What is the main method signature in a Java program?

Accepted Answer

public static void main(String[] args)

Answer

protected static void run(String args)

Answer

private static int main()

Answer

public void start()

Question 3

What is the correct syntax to create a new instance of a class in Java?

Accepted Answer

ClassName objName = new ClassName();

Answer

Class newClass = create Class();

Answer

new ClassName objName();

Answer

create ClassName objName;

Question 4

What is the difference between '==' and '.equals()' when comparing Strings in Java?

Accepted Answer

'==' compares the memory addresses of the objects, while '.equals()' compares the actual contents of the objects.

Answer

'==' and '.equals()' are not used for comparing Strings in Java.

Answer

'==' and '.equals()' perform the same type of comparison for Strings.

Answer

'==' compares the actual contents of the objects, while '.equals()' compares the memory addresses of the objects.

Question 5

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

Accepted Answer

To refer to current class instance variables or methods.

Answer

To access static variables.

Answer

To declare a new object instance.

Answer

To stop the execution of a method.

Question 6

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

Accepted Answer

5

Answer

4

Answer

6

Answer

Error

Question 7

What is the correct way to declare a constant variable in Java?

Accepted Answer

final int PI = 3.14159;

Answer

constant int PI = 3.14159;

Answer

static final PI = 3.14159;

Answer

int PI = 3.14159;

Question 8

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

Accepted Answer

To repeatedly execute a block of code for a specified number of times.

Answer

To conditionally execute a block of code based on a boolean expression.

Answer

To define a method that can be called multiple times.

Answer

To store a collection of elements in a single variable.

Question 9

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

Accepted Answer

To create class-level variables and methods that can be accessed without creating an instance of the class.

Answer

To declare local variables within a method.

Answer

To define a method that can only be called by instances of the class.

Answer

To specify that a variable's value cannot be changed.

Question 10

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

Accepted Answer

To exit a loop or switch statement and transfer control to the statement immediately following the loop or switch.

Answer

To skip the current iteration of a loop and continue with the next iteration.

Answer

To execute a block of code if a condition is met.

Answer

To declare the end of a class definition.

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