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Java Classes and Implementation Quiz

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Questions and Answers

Which programming language is used in this text to explore how to create classes and encapsulate state and behavior inside of them?

Java (correct)

JavaScript

Python

C++

What is the purpose of a constructor in Java?

To initialize objects

To set initial values for object attributes (correct)

To encapsulate state and behavior

To define methods

What is the name of the class defined in the text?

Animal

Dog

Object

Pet (correct)

What is the purpose of the 'birthday' method in the 'Pet' class?

To increment the age of the pet Signup and view all the answers

What is the purpose of the 'getAge' method in the 'Pet' class?

To retrieve the age of the pet Signup and view all the answers

What is the purpose of the 'Pet' class in the text?

The purpose of the 'Pet' class is to represent a pet and encapsulate its name and age. Signup and view all the answers

How is a constructor in Java different from a regular method?

A constructor in Java is a special method that is used to initialize objects. It is different from a regular method because it has the same name as the class and does not have a return type. Signup and view all the answers

What is the purpose of the 'birthday' method in the 'Pet' class?

The purpose of the 'birthday' method in the 'Pet' class is to increment the age of the pet by one. Signup and view all the answers

How does encapsulation help in Java programming?

Encapsulation helps in Java programming by hiding the internal details of an object and providing access to the object through methods. It helps in achieving data abstraction and data hiding. Signup and view all the answers

What is the main difference between Java classes and Python classes?

The main difference between Java classes and Python classes is the syntax and the way they are defined. Java classes use the 'class' keyword and have explicit access modifiers, while Python classes use the 'class' keyword and do not have explicit access modifiers. Signup and view all the answers