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Java 8 In Action

Java 8 In Action

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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.

· Fundamentals
· Functional-style data processing
· Effective Java 8 programming
· Beyond Java

About the Author

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 Chapter 1 Java 8: why should you care? · Why is Java still changing? · Functions in Java · Streams · Default methods · Other good ideas from functional programming Chapter 2 Passing code with behavior parameterization · Coping with changing requirements · Behavior parameterization · Tackling verbosity · Real-world examples Chapter 3 Lambda expressions · Lambdas in a nutshell · Where and how to use lambdas · Putting lambdas into practice: the execute around pattern · Using functional interfaces · Type checking, type inference and restrictions · Method references · Putting lambdas and method references into practice! · Useful methods to compose lambda expressions · Similar ideas from mathematics Part 2 Functional-style data processing Chapter 4 Introducing streams · What are streams? · Getting started with streams · Streams vs. collections · Stream operations Chapter 5 Working with streams · Filtering and slicing · Mapping · Finding and matching · Reducing · Putting it all into practice · Numeric streams · Building streams Chapter 6 Collecting data with streams · Collectors in a nutshell · Reducing and summarizing · Grouping · Partitioning · The Collector interface · Developing your own collector for better performance Chapter 7 Parallel data processing and performance · Parallel streams · The fork/join framework · Spliterator Part 3 Effective Java 8 programming Chapter 8 Refactoring, testing and debugging · Refactoring for improved readability and flexibility · Refactoring object-oriented design patterns with lambdas · Testing lambdas · Debugging Chapter 9 Default methods · Evolving APIs · Default methods in a nutshell · Usage patterns for default methods · Resolution rules Chapter 10 Using Optional as a better alternative to null · How do you model the absence of a value? · Introducing the Optional class · Patterns for adopting Optional · Practical examples of using Optional Chapter 11 CompletableFuture: composable asynchronous programming · Futures · Implementing an asynchronous API · Make your code non-blocking · Pipelining asynchronous tasks · Reacting to a CompletableFuture completion Chapter 12 New Date and Time API · LocalDate, LocalTime, Instant, Duration and Period · Manipulating, parsing and formatting dates · Working with different time zones and calendars Part 4 Beyond Java Chapter 13 Thinking functionally · Implementing and maintaining systems · What’s functional programming? · Recursion vs. iteration Chapter 14 Functional programming techniques · Functions everywhere · Persistent data structures · Lazy evaluation with streams · Pattern matching · Miscellany Chapter 15 Blending OOP and FP: comparing Java 8 and Scala · Introduction to Scala · Functions · Classes and traits Chapter 16 Conclusions and where next for Java · Review of Java 8 features · What’s ahead for Java?


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Product Details
  • ISBN-13: 9789351197430
  • Publisher: Dreamtech Press
  • Binding: Paperback
  • No of Pages: 424
  • ISBN-10: 9351197433
  • Publisher Date: 2014
  • Language: English

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