Part 2. Functional-style data processing

The second part of this book is a deep exploration of the new Streams API, which lets you write powerful code that processes a collection of data in a declarative way. By the end of this second part, you’ll have a full understanding of what streams are and how you can use them in your codebase to process a collection of data concisely and efficiently.

Chapter 4 introduces the concept of a stream and explains how it compares with a collection.

Chapter 5 investigates in detail the stream operations available to express sophisticated data processing queries. You’ll look at many patterns such as filtering, slicing, finding, matching, mapping, and reducing.

Chapter 6 covers collectors—a feature of the Streams ...

Get Java 8 in Action: Lambdas, streams, and functional-style programming now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.