Groovy is powerful and optimised, featuring dynamic typing along with static typing and static compilation capabilities.
A language integrated smoothly with Java program, and immediately deliver to your application powerful features, including scripting capabilities, Domain Specific Language authoring, runtime time, compile time, meta programming and function programming

Flat learning curve:
Concise, readable and expressive syntax, easy to learn for Java developer
Smooth Java Integration

seamlessly and transparently integrates and interoperates with java and any third party lib.
Vibrant and Rich eco system

Web development, reactive application, concurrency, / Asynchronous, parallism library, test framework, build tools , code analysis, GUI building,
powerful features
Closure, builder, runtime, compile time, meta programming, functional programming, type inference, and static compilation.
scripting and testing glue

great for writing concise and maintenance test, and for all you build and automation tasks

Groovy Theory