Groovy GString interpolation is covered here with 10 practical examples. Learn ${} expressions, lazy evaluation, and GString vs String. Tested on Groovy 5.x. “String interpolation is one of those features that, once you have it, you can never go back to concatenation.” Dierk König, Groovy in Action Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Beginner to Intermediate | Reading Time: 16 minutes If you have ever concatenated strings in Java using + operators and ... Read More