https://kevinwang930.github.io/tags/stream/Recent content in Stream on Kevin wang's blogHugoen-USSat, 27 Jun 2026 18:02:29 +0800https://kevinwang930.github.io/post/java/stream/Sat, 27 Jun 2026 18:02:29 +0800https://kevinwang930.github.io/post/java/stream/<p><code>java.util.stream.Stream</code> is the public face of Java 8&rsquo;s functional-style aggregate operations. Under the hood it is not a data structure — it is a <strong>lazy pipeline</strong> of linked stages backed by a <code>Spliterator</code> source. Intermediate operations such as <code>filter</code> and <code>map</code> only extend the pipeline; computation begins when a terminal operation such as <code>collect</code> or <code>forEach</code> triggers evaluation. This document traces the OpenJDK implementation centered on <code>Stream</code>, its pipeline machinery, and how elements flow from source to result.</p>