collection

Groovy collection types and their powerful built-in methods.

10 Useful Groovy find() Method Examples to Locate First Match

Learn how to use Groovy find() method with 10 practical examples. Find first matching element in lists, maps, and strings. Tested on Groovy 5.x. “Finding a needle in a haystack is easy when you have the right method. In Groovy, that method is find().” Kent Beck, Test-Driven Development Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Beginner to Intermediate | Reading Time: 16 minutes Every developer hits this scenario: you have a list of items ... Read More

12 Groovy each() Loop Examples to Iterate Like a Pro

The Groovy each() method lets you iterate with elegant closures. See 12 practical examples covering lists, maps, strings, and more. Tested on Groovy 5.x. “Iteration is the mother of mastery. In Groovy, each() makes that mastery effortless.” Venkat Subramaniam, Programming Groovy 2 Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Beginner to Intermediate | Reading Time: 18 minutes If you’ve been writing for loops in Groovy the way you did in Java, it’s time for ... Read More

10 Practical Groovy Set Examples for Unique Collections

Groovy set provides built-in support, shown here with 10 examples. Create unique collections, perform set operations like union and intersection. Tested on Groovy 5.x. “A set is a Many that allows itself to be thought of as a One.” – Georg Cantor Georg Cantor, Mathematician Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Beginner to Intermediate | Reading Time: 16 minutes If you’ve been calling .unique() on a Groovy List to remove duplicates, you already ... Read More