Java 8 in Action is a clearly written guide to the new features of Java 8. The book covers lambdas, streams, and functional-style programming. With Java 8's functional features you can now write more concise code in less time, and also automatically benefit from multicore architectures. It's time to dig in!

Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications.

About the Book

Every new version of Java is important, but Java 8 is a game changer. Java 8 in Action is a clearly written guide to the new features of Java 8. It begins with a practical introduction to lambdas, using real-world Java code. Next, it covers the new Streams API and shows how you can use it to make collection-based code radically easier to understand and maintain. It also explains other major Java 8 features including default methods, Optional, CompletableFuture, and the new Date and Time API.

This book is written for programmers familiar with Java and basic OO programming.

What's Inside

How to use Java 8's powerful new features
Writing effective multicore-ready applications
Refactoring, testing, and debugging
Adopting functional-style programming
Quizzes and quick-check questions

About the Authors

Raoul-Gabriel Urma is a software engineer, speaker, trainer, and PhD candidate at the University of Cambridge. Mario Fusco is an engineer at Red Hat and creator of the lambdaj library. Alan Mycroft is a professor at Cambridge and cofounder of the Raspberry Pi Foundation.

Table of Contents

PART 1 FUNDAMENTALS

Java 8: why should you care?
Passing code with behavior parameterization
Lambda expressions

PART 2 FUNCTIONAL-STYLE DATA PROCESSING

Introducing streams
Working with streams
Collecting data with streams
Parallel data processing and performance
PART 3 EFFECTIVE JAVA 8 PROGRAMMING
Refactoring, testing, and debugging
Default methods
Using Optional as a better alternative to null
CompletableFuture: composable asynchronousprogramming
New Date and Time API

PART 4 BEYOND JAVA 8

Thinking functionally
Functional programming techniques
Blending OOP and FP: comparing Java 8 and Scala
Conclusions and where next for Java

APPENDIXES

Miscellaneous language updates
Miscellaneous library updates
Performing multiple operations in parallelon a stream
Lambdas and JVM bytecode

�ber die Autorin bzw. den Autor

Raoul-Gabriel Urma has worked as a software engineer for Oracle's Java Platform Group, Google's Python team, Ebay, and Goldman Sachs as well as for several startup projects. He's currently completing a PhD in Computer Science at the University of Cambridge and is a regular speaker and instructor.

Mario Fusco is a senior software engineer at Red Hat working on Drools, the JBoss rule engine. He created the open source library lambdaj, an internal Java DSL for manipulating collections in a functional way.

Alan Mycroft is Professor of Computer Science at the University of Cambridge, where he researches programming languages, their semantics, optimization and implementation. He is a co-founder and Trustee of the Raspberry Pi Foundation.

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