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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

Understanding lambda expressions

We have mentioned lambda expressions several times already and stated that their usage in Java justified the introduction of functional interfaces in the java.util.function package. The lambda expression allows us to simplify function implementation by removing all boilerplate code of anonymous classes, leaving only minimally necessary information. We have also explained that this simplification is possible because a functional interface has only one abstract method, so the compiler and JVM match the provided functionality with the method signature and generate the functional interface implementation behind the scene.

Now, it's time to define the lambda expression syntax and see the range of possible forms of lambda expressions, before we start using them to make our code shorter and more readable than when we used anonymous classes.

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