Question 1

What is a class in Java?

Accepted Answer

A blueprint for creating objects

Answer

A keyword in Java

Answer

A method for executing code

Answer

A type of variable

Question 2

What is an object in Java?

Accepted Answer

An instance of a class

Answer

A method that groups classes

Answer

A reference type

Answer

A collection of variables

Question 3

Which keyword is used to create a class in Java?

Accepted Answer

class

Answer

define

Answer

create

Answer

object

Question 4

What is encapsulation in the context of Java classes?

Accepted Answer

The bundling of data and methods within a class

Answer

Defining methods without parameters

Answer

Creating multiple classes

Answer

Using inheritance

Question 5

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

Accepted Answer

To refer to the current object instance

Answer

To define a class

Answer

To create a new object

Answer

To call a method

Question 6

What is a constructor in Java?

Accepted Answer

A special method used to initialize objects

Answer

A method to destroy an object

Answer

A method to perform calculations

Answer

A type of variable

Question 7

What is inheritance in Java?

Accepted Answer

A mechanism to create a new class using properties and methods of an existing class

Answer

A method to speed up code

Answer

A way to organize variables

Answer

A way to delete classes

Question 8

What is polymorphism in Java?

Accepted Answer

The ability of a variable, function, or object to take on multiple forms

Answer

A way to compile code

Answer

A method for error handling

Answer

A type of data structure

Question 9

What is abstraction in Java?

Accepted Answer

The concept of hiding complex implementation details and showing only the essential features of an object

Answer

Creating multiple constructors

Answer

Making classes abstract

Answer

Using the 'final' keyword

Question 10

What does the 'static' keyword indicate when used in a Java class?

Accepted Answer

The method or variable belongs to the class rather than any instance of the class

Answer

The method cannot be overridden

Answer

The class cannot be instantiated

Answer

The variable is constant

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