Modern Java in Action

Part 2. Functional-style data processing with streams

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 ...