Metaprogramming - TechnoScripts

metaprogramming

Groovy metaprogramming for dynamic method and property injection.

Groovy Custom Annotations – Create Your Own with 10 Tested Examples

Groovy custom annotations are versatile. See 10 tested examples covering annotation declaration, retention policies, AST transformations, and runtime processing. “Annotations are metadata that give your code a voice – they tell the compiler, the runtime, and other developers what your intentions are without cluttering your logic.” Last Updated: July 2026 | Tested on: Groovy 5.0.6, Java 17 | Difficulty: Advanced | Reading Time: 18 minutes Groovy ships with a rich set of built-in annotations – @Immutable, @ToString, @Builder, and dozens ... Read More

Groovy Command Chain – Build Natural Language DSLs with 10 Examples

Groovy command chains to build natural language DSLs. 10+ examples covering method chaining without dots, named parameters. Groovy 5.0.6. “Good code reads like well-written prose. Groovy command chains take that philosophy and make it literal.” Last Updated: July 2026 | Tested on: Groovy 5.0.6, Java 17+ | Difficulty: Intermediate to Advanced | Reading Time: 22 minutes Have you ever looked at a piece of code and wished it read more like English? With Groovy command chains, that is exactly what ... Read More

Groovy @Builder Annotation – Builder Pattern Made Easy with 10+ Examples

Groovy builder pattern with the @Builder annotation with 10+ examples. DefaultStrategy, SimpleStrategy, ExternalStrategy, InitializerStrategy explained. “Separate the construction of a complex object from its representation.” Design Patterns (1994), Builder intent Last Updated: July 2026 | Tested on: Groovy 5.0.6, Java 17+ | Difficulty: Intermediate | Reading Time: 19 minutes When a class has many fields – some required, some optional – constructors become unwieldy and map-based construction loses type safety. The groovy builder pattern via the @Builder annotation solves this ... Read More