The Stream API has been around for a while now, and you’ve probably used it in practice already.
But if you want to get a clearer picture of how to best make use of it, this guide provides a structured approach to understanding the subtleties of working with Java Streams:
Getting started: we'll start by establishing the basics of the Stream API, including how to create a Stream and perform some simple operations on it - iterating, filtering, mapping
Combine Streams with other Java features: the API really shines when combined with other powerful language features like Collectors, lambda expressions and Collections
More advanced operations with Streams: exception handling, parallel streams, customizing the API
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