The Groovy def keyword is covered here with 12 practical examples. Learn dynamic typing, type inference, and when to use def vs explicit types. Tested on Groovy 5.x. “The best code is the code you don’t have to write. Groovy’s def keyword is proof of that.” Dierk König, Groovy in Action Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Beginner | Reading Time: 14 minutes If you’ve looked at any Groovy code, you’ve probably seen ... Read More