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Java 9 with JShell

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

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Product type Paperback
Published in Mar 2017
Publisher Packt
ISBN-13 9781787282841
Length 408 pages
Edition 1st Edition
Languages
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Author (1):
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Gaston C. Hillar Gaston C. Hillar
Author Profile Icon Gaston C. Hillar
Gaston C. Hillar
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Table of Contents (23) Chapters Close

Java 9 with JShell
Credits
About the Author
Acknowledgement
About the Reviewer
www.PacktPub.com
Customer Feedback
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 Exercise Answers Index

Exercises


Now that you understand an object's life cycle, it is time to spend some time in JShell creating new classes and instances.

Exercise 1

  1. Create a new Student class with a constructor that requires two String arguments: firstName and lastName. Use the arguments to initialize fields with the same names as the arguments. Display a message with the values for firstName and lastName when an instance of the class is created.

  2. Create an instance of the Student class and assign it to a variable. Check the messages printed in JShell.

  3. Create an instance of the Student class and assign it to a variable. Check the messages printed in JShell.

Exercise 2

  1. Create a function that receives two String arguments: firstName and lastName. Create an instance of the previously defined Student class with the received arguments as parameters for the creation of the instance. Use the instance properties to print a message with the first name followed by a space and the last name. You will be able to create a method...

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