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Java 11 Cookbook

You're reading from   Java 11 Cookbook A definitive guide to learning the key concepts of modern application development

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Product type Paperback
Published in Sep 2018
Publisher
ISBN-13 9781789132359
Length 802 pages
Edition 2nd Edition
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Authors (2):
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Mohamed Sanaulla Mohamed Sanaulla
Author Profile Icon Mohamed Sanaulla
Mohamed Sanaulla
Nick Samoylov Nick Samoylov
Author Profile Icon Nick Samoylov
Nick Samoylov
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Table of Contents (18) Chapters Close

Preface 1. Installation and a Sneak Peek into Java 11 FREE CHAPTER 2. Fast Track to OOP - Classes and Interfaces 3. Modular Programming 4. Going Functional 5. Streams and Pipelines 6. Database Programming 7. Concurrent and Multithreaded Programming 8. Better Management of the OS Process 9. RESTful Web Services Using Spring Boot 10. Networking 11. Memory Management and Debugging 12. The Read-Evaluate-Print Loop (REPL) Using JShell 13. Working with New Date and Time APIs 14. Testing 15. The New Way of Coding with Java 10 and Java 11 16. GUI Programming Using JavaFX 17. Other Books You May Enjoy

Immutability as a means of achieving concurrency


In this recipe, you will learn how to use immutability against problems caused by concurrency. 

 

Getting ready

A concurrency problem most often occurs when different threads modify and read data of the same shared resource. Decreasing the number of modifying operations diminishes the risk of concurrency issues. This is where immutability—the condition of read-only values—enters the stage. 

Object immutability means an absence of means to change its state after the object has been created. It does not guarantee thread-safety but helps to increase it significantly and provide sufficient protection from concurrency problems in many practical applications. 

Creating a new object instead of reusing an existing one (by changing its state via setters and getters) is often perceived as an expensive approach. But with the power of modern computers, there has to be a huge number of object creations done for performance to be affected in any significant...

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