Java 8 in Action. Lambdas, Streams, and functional-style programming, Raoul-Gabriel Urma, Mario Fusco, and Alan Mycroft

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Summary

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

Effective Writing 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 один 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 PROGRAMMING 8

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 and OOP 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

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