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