collections

Working with lists, maps, and sets in Groovy.

10 Practical Groovy findAll() Examples to Filter Collections

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Groovy findAll() makes filtering collections effortless. Filter lists, maps, and strings with 10 tested examples. Complete filtering guide for Groovy 5.x. “Filtering is the art of keeping only what matters. In Groovy, findAll() makes that art effortless.” Venkat Subramaniam, Programming Groovy 2 Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Beginner to Intermediate | Reading Time: 16 minutes Filtering is one of the most common collection operations in any language. You have a list of ... Read More

12 Essential Groovy Collections Methods Every Developer Must Know

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Complete Groovy collections overview covering lists, maps, sets, and ranges with 12 tested examples. Master collect, findAll, inject, groupBy on Groovy 5.x. “The collection framework is the backbone of any language. Master collections, and you master data manipulation.” Joshua Bloch, Effective Java Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Intermediate | Reading Time: 22 minutes If you’ve been writing Groovy for any amount of time, you already know that Groovy collections are where the ... Read More

14 Essential Groovy For Loop Variations Every Developer Should Know

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Every Groovy for loop variation is covered here with 14 tested examples. Classic for, for-in, ranges, each, and more. Complete guide for Groovy 5.x. “Any fool can write a loop that works. A good developer writes a loop that’s readable, efficient, and idiomatic.” Edsger Dijkstra, A Discipline of Programming Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Beginner to Intermediate | Reading Time: 16 minutes Loops are the backbone of programming. Processing a list of ... Read More