Groovy is an agile dynamic language for the Java 2 Platform that has many of the features that people like so much in languages like Python, Ruby and Smalltalk, making them available to Java developers using a Java-like syntax.
Groovy is designed to help you get things done on the Java 2 Platform in a quick, concise and fun way — Groovy brings the power of a scripting language directly into the Java 2 Platform. For example:
- Shell scripting using Groovy allows the full power of the Java Platform to be brought to bear to the task at hand.
- Groovy can be used (and indeed is already being used) as a replacement for Java for small and medium sized applications to execute on the Java 2 Platform.
- Groovy can be used as an embedded language for dynamic business rules or extension points utilizing the agility of Groovy and saving the cost of redeploying applications for each change of rule (especially when the rules are stored in a database).
- Groovy makes writing test cases for unit tests very easy.
As well as being a powerful language for scripting Java objects, Groovy can be used as an alternative compiler to javac to generate standard Java bytecode to be used by any Java project.
- Closure support
- Native syntax for Lists and Maps
- Groovy Markup
- Groovy Path expression language
- Groovlets for implementing Servlets easily in simple Groovy scripts
- Groovy SQL for making SQL more Groovy
- Groovy Beans for simpler syntax for working with beans
- Groovy Template Engines which are pluggable, simple to use, integrate GPath and compile to bytecode
- Ant Scripting
- Regex syntax for neater scripting with regular expressions
- Operator Overloading to simplify working with datatypes Collections and Maps
- Polymorphic iteration and autoboxing
- Compiles straight to Java bytecode
- Works cleanly with all existing Java objects and libraries
The Groovy development team is happy to announce the joint releases of Groovy 1.8.9, 2.0.7, and 2.1.1!
In this interview, the discussion centered around the new features of that release, including coverage of the "invoke dynamic" support, performance, meta-annotations, compiler configuration, and more.
- offers full support for the JDK 7 “invoke dynamic” bytecode instruction and API,
- goes beyond conventional static type checking capabilities with a special annotation to assist with documentation and type safety of DSLs and adds static type checker extensions,
- provides additional compilation customization options,
- features a meta-annotation facility for combining annotations elegantly,
- and provides various other enhancements and minor improvements.
Read more News on the Groovy Blog
Probably the best way to get started on Groovy is to install a binary distribution and play with it.
Or try reading the user guide or browsing some of the links on the left of this page.
Current build status
The Groovy project uses DamageControl as a Continuous Integration system to make Groovy build automatically. The little coloured bubble on the left show the status of the last automatic build: if it's green, the build was successful, if it's red, the build failed. And if it is pulsating, it means there's a new build currently in the works.