Get Groovy array length using length, size(), and count(). 10 tested examples covering arrays, lists, maps, and strings on Groovy 5.x. “Knowing how many elements you have is the first step to doing something useful with them.” Edsger Dijkstra, A Discipline of Programming Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Beginner | Reading Time: 14 minutes Checking how many elements an array or collection contains is one of the most frequent operations in any ... Read More