Groovy

Groovy can be considered an enriched version of the Java programming language, including additional features that can improve productivity and ease the development process. Its core is based on Java, but its power relies in the enhancements it brings to the table.
Providing support for domain-specific languages, the Groovy source code is intelligible and easy to read. It can be used in any environment where Java is used, since it communicates with Java objects, libraries, classes or other components and compiles into Java bytecode.
With a syntax that is similat to that of Java, Groovy scripts can be executed from a Java-compliant integrated development environment or the command prompt. The 'Groovy Console' integrates an editor that features line numbering, allowing you to write scripts, view errors, execute scripts and view results. It includes compiling capabilities and allows you to add Java files or directories to your ClassPath.
Groovy is distinct from Java in various ways. For instance, it is capable of generating functions that act as first class objects, supports closures, associative arrays and various extra helper methods. It natively supports regular expressions and features polymorphic iteration, as well as dynamic and static typing.
This language includes classes for metaprogramming, allows XML and JSON processing and can manage primitives, ANT DSL and OO abilities.
Groovy imports elements from languages such as Ruby, Python and Smalltalk into Java, providing a modern programming model. Its syntax is simple and consistent, allowing developers to easily learn about its functioning principles and assisting them in creating appealing GUI or web applications.