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Java Interview Guide : 200+ Interview Questions and Answers - What is Encapsulation?

Java Interview Guide : 200+ Interview Questions and Answers - What is Encapsulation?

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial introduces encapsulation, a key concept in object-oriented programming, which involves hiding the implementation details of a class. Three approaches to encapsulation are discussed: direct access to class variables, using getters and setters, and encapsulating logic within methods. The tutorial emphasizes that the third approach, which abstracts operations into methods, offers the best encapsulation. This method allows changes in implementation without affecting external classes. The video concludes with a recommendation to practice encapsulation in programming.

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary goal of encapsulation in object-oriented programming?

To expose all class details to other classes

To hide the implementation details of a class

To increase the complexity of a class

To make classes dependent on each other

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a limitation of directly accessing class variables?

It simplifies the class interface

It makes the code more readable

It exposes the internal state of the class

It allows for easy modification of variables

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do getters and setters improve encapsulation compared to direct variable access?

They allow direct modification of variables

They hide the internal state and control access

They expose the class implementation details

They make the class interface more complex

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the advantage of using method-based encapsulation over getters and setters?

It allows direct access to class variables

It exposes the internal logic of the class

It simplifies the class interface by abstracting operations

It makes the class dependent on external classes

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is the method-based approach considered the best for encapsulation?

It makes the class interface less intuitive

It allows for direct variable access

It keeps the logic and data encapsulated within the class

It requires more code to implement

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