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You're reading from Java 9 with JShell Introducing the full range of Java 9's new features via JShell

Product type Paperback

Published in Mar 2017

Publisher Packt

ISBN-13 9781787282841

Length 408 pages

Edition 1st Edition

Languages

Java

Concepts

Object Oriented Programming

Author (1):

Gaston C. Hillar

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Table of Contents (16) Chapters

Preface

1. JShell – A Read-Evaluate-Print-Loop for Java 9 FREE CHAPTER

2. Real-World Objects to UML Diagrams and Java 9 via JShell

3. Classes and Instances

4. Encapsulation of Data

5. Mutable and Immutable Classes

6. Inheritance, Abstraction, Extension, and Specialization

7. Members Inheritance and Polymorphism

8. Contract Programming with Interfaces

9. Advanced Contract Programming with Interfaces

10. Maximization of Code Reuse with Generics

11. Advanced Generics

12. Object-Oriented, Functional Programming, and Lambda Expressions

13. Modularity in Java 9

A. Exercise Answers

Index

Creating concrete classes that inherit from abstract superclasses

In the previous chapter, we created an abstract base class named VirtualAnimal and then we coded the following three abstract subclasses: VirtualMammal, VirtualDomesticMammal, and VirtualHorse. Now, we will code the following three concrete classes. Each class represents a different horse breed and is a subclass of the VirtualHorse abstract class.

AmericanQuarterHorse: This class represents a virtual horse that belongs to the American Quarter Horse breed.
ShireHorse: This class represents a virtual horse that belongs to the Shire Horse breed.
Thoroughbred: This class represents a virtual horse that belongs to the Thoroughbred breed.

The three concrete classes will implement the following three abstract methods they inherited from abstract superclasses:

String getAsciiArt(): This abstract method is inherited from the VirtualAnimal abstract class.
String getBaby(): This abstract method is inherited from the VirtualAnimal abstract...