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Sequenced Collections (Java 21)

Last Updated: December 6, 2025

5 min read

Let's dive into the fascinating world of Sequenced Collections introduced in Java 21. If you've ever felt the frustration of working with collections that don't maintain order or have quirks that can lead to unexpected behavior, you're in for a treat.

Sequenced Collections provide a way to handle collections with a defined sequence while offering the flexibility and performance characteristics we need in modern applications.

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