Unlocking Java 22 Stream Gather API: Extending Stream Capabilities with Virtual Threads

This article examines the concept of streams, compares existing Java stream libraries, introduces Java 22's Stream Gather API, and demonstrates how virtual threads simplify implementing advanced operators like mapConcurrent, while outlining design goals, code examples, and future extensions.

Backend DevelopmentGather APIJava 22

0 likes · 15 min read

Unlocking Java 22 Stream Gather API: Extending Stream Capabilities with Virtual Threads

DaTaobao Tech

Mar 20, 2024 · Backend Development

Understanding Java Stream Gather API and the mapConcurrent Operator

The article explains Java 22’s new Stream Gather API, which extends the traditional Stream model with custom Gatherers that can emit zero‑to‑many elements, enabling stateful, parallel operations such as a concurrency‑controlled mapConcurrent operator built on virtual threads, and compares it to Reactor‑core and Pekko‑Stream.

Gather APIJavaStream API

0 likes · 14 min read

Understanding Java Stream Gather API and the mapConcurrent Operator