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Java 11 and 12 ??? New Features

You're reading from Java 11 and 12 ??? New Features Learn about Project Amber and the latest developments in the Java language and platform

Product type Paperback

Published in Mar 2019

Publisher Packt

ISBN-13 9781789133271

Length 242 pages

Edition 1st Edition

Languages

Java

Concepts

Programming Language

Author (1):

Gupta

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Table of Contents (24) Chapters

Title Page

Copyright and Credits

About Packt

Contributors

Preface

1. Type Inference FREE CHAPTER

2. AppCDS

3. Garbage Collector Optimizations

4. Miscellaneous Improvements in JDK 10

5. Local Variable Syntax for Lambda Parameters

6. Epsilon GC

7. The HTTP Client API

8. ZGC

9. Flight Recorder and Mission Control

10. Miscellaneous Improvements in JDK 11

11. Switch Expressions

12. Miscellaneous Improvements in JDK 12

13. Enhanced Enums in Project Amber

14. Data Classes and Their Usage

15. Raw String Literals

16. Lambda Leftovers

17. Pattern Matching

1. Other Books You May Enjoy

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Index

Chapter 9. Data classes and their usage

Work is in progress on data classes under the Project Amber. It proposes to bring to developers a simplified way of modelling data as data, by introducing special classes with the keyword record. The state of the data class would be able to be captured using the class header, which is in stark contrast to what the existing Plain Old Java Objects (POJO) offer at present.

In the chapter, we'll cover the following topics:

An introduction to the data classes
Need of the data classes and their limitations
Aggregate and exploded form of a data class
Pattern matching with data classes
Inheritance with abstract data classes and interfaces
Adding variables and methods
Overriding default behavior

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Authors (1)

Gupta

Gupta

Mala Gupta, a Java champion, works as a developer advocate for JetBrains. The founder of eJavaGuru, she has been actively supporting Java certification as a path to career advancement. Since 2006, she has been coaching students and professionals with a view to achieving success in these certifications. A frequent speaker at industry conferences, her Java books with Manning Publications, USA, are top-rated for Oracle certification around the globe. She has over 18 years of experience in the software industry. Mala has also co-founded KaagZevar, a platform for nurturing creativity as an essential life skill. She co-leads the Delhi Java User Group. As the Director of Women Who Code Delhi, she also drives initiatives for diversity advocacy for Women in Technology.

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