While the term "lambda expression" may sound abstract and academic, Java 8 Lambdas can have a big impact on how you program every day. In simplest terms, a lambda expression is a function—a bit of code—that you can pass to another method as an argument. Thus, you can cope with changing requirements by using a behavior, represented by a lambda, as a parameter. Java 8's functiona...
While the term "lambda expression" may sound abstract and academic, Java 8 Lambdas can have a big impact on how you program every day. In simplest terms, a lambda expression is a function—a bit of code—that you can pass to another method as an argument. Thus, you can cope with changing requirements by using a behavior, represented by a lambda, as a parameter. Java 8's functional programming features, like lambdas and the new Stream API that enables a cleaner way to iterate through collections, can help you write concise, maintainable code that scales easily and performs well on multicore architectures.
Java 8 in Action is a clearly-written guide to Java 8 lambdas and functional programming in Java. It begins with a practical introduction to the structure and benefits of lambda expressions in real-world Java code. The book then introduces the Stream API and shows how it can make collections-related code radically easier to understand and maintain. Along the way, you'll discover new FP-oriented design patterns with Java 8 for code reuse, code readability, exception handling, data manipulation, and concurrency. For developers also exploring other functional languages on the JVM, the book concludes with a quick survey of useful functional features in Scala.
作者简介
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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 ...
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.
You can follow Raoul and Mario on Twitter at @raoulUK and @mariofusco.
目录
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Table of Contents
PART I: FUNDAMENTALS
1 Java 8: why should you care? - FREE
2 Passing code with behavior parameterization - AVAILABLE
3 Lambda expressions - AVAILABLE
PART II: FUNCTIONAL-STYLE DATA PROCESSING
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(更多)
Table of Contents
PART I: FUNDAMENTALS
1 Java 8: why should you care? - FREE
2 Passing code with behavior parameterization - AVAILABLE
3 Lambda expressions - AVAILABLE
PART II: FUNCTIONAL-STYLE DATA PROCESSING
4 Processing data with streams - AVAILABLE
5 Collecting data with streams - AVAILABLE
6 Parallel data processing and performance - AVAILABLE
PART III: EFFECTIVE JAVA 8 PROGRAMMING
7 Refactoring, testing, debugging - AVAILABLE
8 Default methods - AVAILABLE
9 Optional: a better alternative to null - AVAILABLE
10 CompletableFuture: composable asynchronous programming - AVAILABLE
11 New Date and Time API - AVAILABLE
PART IV: BEYOND JAVA 8
12 Thinking functionally - AVAILABLE
13 Functional programming techniques - AVAILABLE
14 Blending OOP and FP: comparing Java 8 and Scala - AVAILABLE
15 Conclusions and "where next" for Java - FREE
APPENDICES:
A Miscellaneous language updates - AVAILABLE
B Miscellaneous library updates - AVAILABLE
C Performing multiple operations in parallel on a Stream - AVAILABLE
D Lambdas and bytecode - AVAILABLE
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In fact, using synchronized across multiple processing cores is far more expensive than we often expect, because synchronization forces code to execute sequentially, which works against the goal of parallelism. (查看原文)
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0 有用 丸子 2016-10-09 12:52:16
其实应该叫「FP in Java 8」更合适，CompletableFuture类大概是目前最实用的类了。
0 有用 wltan 2019-11-06 09:46:27
有的地方为了追求浅显而放弃了系统，比如completableFututure那章，看的时候顺着作者思路都明白，但是实际工作中用的时候，还得去看文档。适合初次接触java8的人，后续体系化的理解需要借助其他资料。
0 有用 雄爷 2018-01-30 10:06:32
对于全面了解Java8的新特性，非常有帮助。
0 有用 夙4 2016-11-20 05:20:11
废话太多，不过对于没接触过函数式编程的人大概很不错。
0 有用 highwind 2017-07-31 22:27:55
虽然lambda和pipeline的引入使语法简洁很多，但某种意义上一小块方糖无法使整杯咖啡变甜，所以java程序员应该尽早拥抱kotlin
0 有用 razors 2024-04-02 19:46:03 北京
已经熟悉 fp 了，感觉一般吧，许多 best practice 都被 scala 或者 kotlin 或者 rust 这样现代一些的语言 enforce 了
0 有用 villim 2024-02-06 02:23:46 广东
写得真的细！JDK8的所有新知识点都说清楚了。 虽然要用17了，但8仍然没用利索。
0 有用 2024 2021-11-04 00:36:28
Stream + Optional, improve readability and flexibility of java code
0 有用 3点一直线 2021-08-05 01:16:28
这个书 讲了java 8 新的几个特性，挺好的。看完基础可以看这个。 讲了lambda， stream， interface default method 这些新的东西。
0 有用 iamswf 2020-01-11 18:31:42
条理清楚，如果想基于java学习函数式编程，推荐这本。