Comprehensive Android Developer Bootcamp - Access Modifier and Getters and Setters

Comprehensive Android Developer Bootcamp - Access Modifier and Getters and Setters

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial covers the basics of object-oriented programming, focusing on properties, instance variables, and behaviors in classes. It highlights vulnerabilities in class design and the importance of using access modifiers to secure classes. The tutorial uses a car analogy to explain encapsulation and demonstrates how to implement getters and setters to manage class properties effectively.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary reason for securing instance variables in a class?

To increase the speed of the program

To allow multiple users to access the same data

To prevent unauthorized access and ensure system integrity

To make the code more readable

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the car analogy, what does the 'black box' represent in object-oriented programming?

The hidden internal workings of a class

The color of a car

The speed of a car

The user interface of a program

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of access modifiers in Java?

To allow multiple users to access the same data

To increase the speed of the program

To control the visibility and accessibility of class members

To change the color of the text in the code editor

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when you try to access a private variable directly?

The variable is automatically converted to public

An error occurs because the variable is not accessible

The program runs faster

The variable is deleted

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a potential consequence of not using access modifiers?

The program will run faster

The system may become vulnerable to unauthorized changes

The code will be more colorful

The program will be more user-friendly

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why should instance variables be declared as private?

To make them accessible from anywhere in the program

To prevent direct access and modification from outside the class

To allow them to be modified by any class

To make them visible in the user interface

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of getters and setters in Java?

To allow multiple users to access the same data

To increase the speed of the program

To provide controlled access to private instance variables

To directly access and modify instance variables

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