Core Java, Volume II—Advanced Features, Tenth Edition

Chapter 1. The Java SE 8 Stream Library

In this chapter

• 1.1 From Iterating to Stream Operations

• 1.2 Stream Creation

• 1.3 The filter, map, and flatMap Methods

• 1.4 Extracting Substreams and Concatenating Streams

• 1.5 Other Stream Transformations

• 1.6 Simple Reductions

• 1.7 The Optional Type

• 1.8 Collecting Results

• 1.9 Collecting into Maps

• 1.10 Grouping and Partitioning

• 1.11 Downstream Collectors

• 1.12 Reduction Operations

• 1.13 Primitive Type Streams

• 1.14 Parallel Streams

Streams provide a view of data that lets you specify computations at a higher conceptual level than with collections. With a stream, you specify what you want to have done, not how to do it. You leave the scheduling of operations to the implementation. For ...