Groovy offers some of the most expressive and developer-friendly collection utilities on the JVM. In this guide, I break down how to:
✔ Filter data with findAll
✔ Search efficiently with find, any, every
✔ Transform lists and maps using collect, collectEntries, collectMany
✔ Group, sort, and aggregate data
✔ Apply these techniques to real-world JSON and API responses
Whether you're building scripts, APIs, or automation tools, this tutorial will help you write cleaner and more powerful Groovy code.
👉 Read the full article:
https://www.djamware.com/post/691c229879e9b9283b11fabc/how-to-filter-find-and-transform-collections-in-groovy
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