Summary

Functional Programming in Java teaches Java developers how to incorporate the most powerful benefits of functional programming into new and existing Java code. You'll learn to think functionally about coding tasks in Java and use FP to make your applications easier to understand, optimize, maintain, and scale.

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

About the Technology

Here's a bold statement: learn functional programming and you'll be a better Java developer. Fortunately, you don't have to master every aspect of FP to get a big payoff. If you take in a few core principles, you'll see an immediate boost in the scalability, readability, and maintainability of your code. And did we mention that you'll have fewer bugs? Let's get started!

About the Book

Functional Programming in Java teaches you how to incorporate the powerful benefits of functional programming into new and existing Java code. This book uses easy-to-grasp examples, exercises, and illustrations to teach core FP principles such as referential transparency, immutability, persistence, and laziness. Along the way, you'll discover which of the new functionally inspired features of Java 8 will help you most.

What's Inside

• Writing code that's easier to read and reason about
• Safer concurrent and parallel programming
• Handling errors without exceptions
• Java 8 features like lambdas, method references, and functional interfaces

About the Reader

Written for Java developers with no previous FP experience.

About the Author

Pierre-Yves Saumont is a seasoned Java developer with three decades of experience designing and building enterprise software. He is an R&D engineer at Alcatel-Lucent Submarine Networks.

Table of Contents

1. What is functional programming?
2. Using functions in Java
3. Making Java more functional
4. Recursion, corecursion, and memoization
5. Data handling with lists
6. Dealing with optional data
7. Handling errors and exceptions
8. Advanced list handling
9. Working with laziness
10. More data handling with trees
11. Solving real problems with advanced trees
12. Handling state mutation in a functional way
13. Functional input/output
14. Sharing mutable state with actors

1. Solving common problems functionally

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3. 购买印刷版图书包括万宁出版社提供的PDF、Kindle和ePub格式的免费电子书。
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5. 关于该技术
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7. 这里有一个大胆的声明：学习函数式编程，你将成为一个更好的Java开发者。幸运的是，你不必掌握FP的每一个方面就能获得巨大的回报。如果你掌握了一些核心原则，你会发现你的代码在可扩展性、可读性和可维护性方面都会立即得到提升。我们有没有提到，你会有更少的bug？让我们开始吧!
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9. 关于这本书
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11. Java中的函数式编程》教你如何将函数式编程的强大优势融入新的和现有的Java代码中。本书使用容易掌握的例子、练习和插图来教授FP的核心原则，如参考透明性、不变性、持久性和懒惰性。在此过程中，你会发现Java 8中哪些新的函数式启发功能对你帮助最大。
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13. 内容包括
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15. 编写更易于阅读和推理的代码
16. 更安全的并发和并行编程
17. 处理错误而不产生异常
18. Java 8 的特点，如 lambdas、方法引用和功能接口
19. 关于读者
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21. 为没有FP经验的Java开发人员编写。
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23. 关于作者
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25. Pierre-Yves Saumont是一位经验丰富的Java开发人员，拥有三十年的企业软件设计和构建经验。他是阿尔卡特-朗讯海底网络公司的研发工程师。
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27. 目录
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29. 什么是函数式编程？
30. 在Java中使用函数
31. 让Java更具功能性
32. 递归、核心递归和记忆化
33. 用列表处理数据
34. 处理可选数据
35. 处理错误和异常
36. 高级列表处理
37. 处理懒惰问题
38. 用树进行更多的数据处理
39. 用高级树解决实际问题
40. 以功能化的方式处理状态突变
41. 功能性输入/输出
42. 与角色共享可变异的状态
43. 用功能化的方式解决常见的问题