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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

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Product type Paperback
Published in Mar 2019
Publisher Packt
ISBN-13 9781789133271
Length 242 pages
Edition 1st Edition
Languages
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Author (1):
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Mala Gupta Mala Gupta
Author Profile Icon Mala Gupta
Mala Gupta
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Toc

Table of Contents (23) Chapters Close

Preface 1. Section 1: JDK 10 FREE CHAPTER
2. Type Inference 3. AppCDS 4. Garbage Collector Optimizations 5. Miscellaneous Improvements in JDK 10 6. Section 2: JDK 11
7. Local Variable Syntax for Lambda Parameters 8. Epsilon GC 9. The HTTP Client API 10. ZGC 11. Flight Recorder and Mission Control 12. Miscellaneous Improvements in JDK 11 13. Section 3: JDK 12
14. Switch Expressions 15. Miscellaneous Improvements in JDK 12 16. Section 4: Project Amber
17. Enhanced Enums in Project Amber 18. Data Classes and Their Usage 19. Raw String Literals 20. Lambda Leftovers 21. Pattern Matching 22. Other Books You May Enjoy

Another syntax for switch expressions

Apart from using -> to specify the return value, a switch expression can also use a colon (:) to mark the beginning of the code to execute and a break statement to return a value. Here's an example:

class Planet { 
    private static long damage; 
    public void use(SingleUsePlastic plastic) { 
        damage += switch(plastic) { 
            case STRAW : break 10;      // Use colon (:) to start code,  
// Use break to return val case BAG : break 11; case SPOON, FORK, KNIFE : break 7; case PLATE : int radius = 6; // no need
// of using curly brace break (radius < 10 ? 15 : 20); // Using
// break to ...
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