Groovy ...

is an agile dynamic language for the Java Platform with many features that are inspired by languages like Python, Ruby and Smalltalk, making modern programming features available to Java developers with almost-zero learning curve
makes writing shell scripts and build scripts easier than ever by supporting powerful processing primitives, a touch of OO programming and an Ant domain specific language
increases developer productivity by reducing scaffolding code when developing web, GUI or console applications
makes writing concise meaningful maintainable code easier than ever by supporting domain specific languages, closure expressions and many compact syntax abbreviations
makes testing easy because all the support you need is built right in
cleanly integrates with all existing Java objects and libraries and compiles straight to Java bytecode in either application development or scripting mode.

"Groovy is like a super version of Java. It can leverage Java's enterprise capabilities but also has cool productivity features like closures, builders and dynamic typing. You have to love Groovy."

Samples

A simple hello world script:

A more sophisticated version using Object Orientation:

Leveraging existing Java libraries:

On the command line:

Documentation [more]

User Guide [more]

Advanced Topics [more]

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Getting Started Guide [more]

Testing Guide [more]

Developer Guide [more]

JavaDoc

Cookbook Examples [more]

Modules [more]

The following modules and contributions are currently available:

COM Scripting — script Windows ActiveX and COM components with Groovy
Gant
GFreeMarker — an integration of the FreeMarker template engine for Groovy
Google Data Support — makes using the Google Data APIs easier from within Groovy
Gram — a simple xdoclet-like tool for processing doclet tags or Java 5 annotations
GraphicsBuilder — GraphicsBuilder is a Groovy builder for Java 2D
Grapplet
Griffon — Dekstop Enhancements for Groovy
Groosh — Provides a shell-like capability for handling external processes.
Groovy Jabber-RPC — allows you to make XML-RPC calls using the Jabber protocol
GroovyJMS
GroovyLab — Provides a domain specific language (DSL) for math engineering (matlab-like syntax).
Groovy Monkey — is a dynamic scripting tool for the Eclipse Platform
GroovyRestlet — Groovy DSL for constructing Restlet application
Groovy Science
Groovy SOAP — create a SOAP server and make calls to remote SOAP servers using Groovy
GroovySWT — a wrapper around SWT, the eclipse Standard Widget Toolkit
GroovyWS — GroovySOAP replacement that uses CXF and Java5 features
GSP — means GroovyServer Pages, which is similar to JSP (JavaServer Pages)
GSQL — supports easier access to databases using Groovy
HTTP Builder — provides a convenient builder API for complex HTTP requests
JideBuilder — JideBuilder is a Groovy builder for the open source JIDE Common Layer
MetaBuilder — MetaBuilder is a builder that builds builders.
Native Launcher — a native program for launching groovy scripts
Proxy-o-Matic — Proxy-o-Matic lets you create dynamic proxies fast and in an homogeneous way
Windows NSIS-Installer — a Windows-specific installer for Groovy
Windows Services — framework for Groovy-based WinNT (Windows) Services
WingSBuilder — WingsBuilder is a Groovy builder for the wingS Framework
XMLRPC — allows you to create a local XML-RPC server and/or to make calls on remote XML-RPC servers
GroovyFX — GroovyFX provides a Groovy binding for JavaFX 2.0.
Gaelyk — Gaelyk is a lightweight Groovy toolkit for developing and deploying Groovy applications on Google App Engine.
GMaven
Groovy Transforms — Provides additional AST Transformations

Grails — a Groovy-based web framework inspired by Ruby on Rails
GORM — the Grails Object-Relational Mapping persistence framework
Griffon — a Groovy-based desktop framework inspired by Grails
GroovyPlugin — A Groovy plugin for JSPWiki
OCM Groovy — A Object Content Mapping implemented in Groovy leveraging the Java Content Repository (JCR)
Tellurium — A test framework built on top of the Selenium test framework implemented in Groovy
Gradle — The next generation build system
GPars — A Groovy concurrency/parallelism library
CodeNarc — Static analysis for defects, bad practices, inconsistencies and style issues in Groovy code.
GroovyServ — GroovyServ makes Groovy’s startup time much faster, by pre-invoking Groovy as a server.
GBench — The benchmarking module for Groovy
GProf — The profiling module for Groovy

Enjoy making your code groovier !!!!

Latest news

If you wish to stay up-to-date with our vibrant community, you can learn more about:

And below, you will find the latest announcements:

Groovy 2.1.5 bug fix release

Dear all,

I'm pleased to announce the release of Groovy 2.1.5.

Groovy 2.1.5 is a bug fix release of the Groovy 2.1 branch. In particular, it fixes a problem we've encountered with Groovy 2.1.4 where the extension module descriptors were not found in the "all" JAR, which meant that the usual nice GDK methods extensions for XML and other modules were not found by Groovy.

You can download Groovy 2.1.5 in the download area and have a look at the JIRA release notes.

Thanks to all who contributed to this release!

Keep on groovy'ing!

Groovy 2.1.4 released

The Groovy development team is pleased to announce the release of Groovy 2.1.4.

Groovy 2.1.4 is essentially a bug fix release of our 2.1 branch, and you can dive into the details in our JIRA release notes.

You can get the distribution in our download area.

Thanks a lot to all those who contributed to this release, and we're looking forward to hearing your feedback!

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