concept stream pipeline in category java

This is an excerpt from Manning's book Java 8 in Action: Lambdas, streams, and functional-style programming. Login to get full access to this book.

Figure 4.1. Chaining stream operations forming a stream pipeline

A chain of intermediate operations that form a stream pipeline

A terminal operation that executes the stream pipeline and produces a result

The idea behind a stream pipeline is similar to the builder pattern.^[1] In the builder pattern, there’s a chain of calls to set up a configuration (for streams this is a chain of intermediate operations), followed by a call to a build method (for streams this is a terminal operation).