Learn Groovy design patterns with 10+ tested examples. Master @Singleton, Strategy with closures, Observer, Builder, Factory, and Decorator with traits. “Design patterns are not about being clever. They are about being clear. Groovy makes them so clear you almost forget they are patterns.” Gang of Four, Design Patterns Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Intermediate to Advanced | Reading Time: 25 minutes In Java, implementing a Gang of Four pattern means creating an ... Read More