What's New in Java 8
What's New in Java 8
An unofficial guide to Java and JDK 1.8
About the Book
If you're just getting to Java 8, I definitely recommend@adamldavis' book -- very concise and helpful. -Fred Jonsson
Java 8 is a giant step forward for the Java language. In Project Lambda, Java gets a new closure syntax (lambda expressions), method-references, and default and static methods on interfaces. It manages to add many of the features of functional languages without losing the clarity and simplicity Java developers have come to expect. In addition, many of the existing Java core library classes have been enhanced with the new Streams API.
This ebook will help you understand Java 8, including: Project Lambda, the new Date-Time API, Streams, default methods, Nashorn, and more.
This book is 100% complete and available in print here and other places.
If you like this, please check out Adam's other books: Learning Groovy, Modern Java Second Edition, and Modern Programming Made Easy.
10% of all proceeds go directly to the Electronic Frontier Foundation (EFF).
Disclaimer: Java is a registered trademark of Oracle. You can find Java here on Oracle's website.
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About the Author
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Table of Contents
- Preface
- 1. Overview
-
2. Lambda Expressions
- 2.1 Syntax
- 2.2 Scope
- 2.3 Method references
- 2.4 Functional Interfaces
- 2.5 Comparisons to Java 7
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3. Default Methods
- 3.1 Default and Functional
- 3.2 Multiple Defaults
- 3.3 Static Methods on Interface
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4. Streams
- 4.1 What is a Stream?
- 4.2 Generating Streams
- 4.3 For Each
- 4.4 Map/Filter/Reduce
- 4.5 Parallel Array
- 4.6 Peek
- 4.7 Limit
- 4.8 Sort
- 4.9 Collectors and Statistics
- 4.10 Grouping and Partitioning
- 4.11 Comparisons to Java 7
- 5. Optional
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6. Nashorn
- 6.1 jjs
- 6.2 Scripting
- 6.3 ScriptEngine
- 6.4 Importing
- 6.5 Extending
- 6.6 Invocable
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7. New Date and Time API
- 7.1 New Classes
- 7.2 Creation
- 7.3 Enums
- 7.4 Clock
- 7.5 Period and Duration
- 7.6 Temporal Adjusters
- 7.7 Instant
- 7.8 Time Zones
- 7.9 Backwards Compatibility
- 8. No More Permanent Generation
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9. Miscellaneous
- 9.1 Base64
- 9.2 CompletableFuture
- 9.3 Annotations on Java Types
- 9.4 Repeating Annotations
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10. Functional Programming in Java 8
- 10.1 Functions
- 10.2 Immutability
- 10.3 Concurrency
- 10.4 Tail-Call Optimization
- 11. Conclusion
- Backports
- Contact the Author
- Notes
Causes Supported
Electronic Frontier Foundation
Defending your civil liberties in a digital world.
https://www.eff.org/Based in San Francisco, EFF is a donor-supported membership organization working to protect fundamental rights regardless of technology.
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