Groovy closure delegate and parameters: it, delegate, owner, and thisObject explained with 10+ examples. Covers delegation strategies and DSL patterns. Tested on Groovy 5.x. “A closure without understanding its delegate is like a letter without knowing the recipient — it might arrive somewhere, but probably not where you intended.” Dierk König, Groovy in Action Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Intermediate | Reading Time: 16 minutes Closures in Groovy go far deeper than ... Read More