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An agile dynamic language for the Java Platform

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Groovy...

  • is an agile and dynamic language for the Java Virtual Machine
  • builds upon the strengths of Java but has additional power features inspired by languages like Python, Ruby and Smalltalk
  • makes modern programming features available to Java developers with almost-zero learning curve
  • supports Domain-Specific Languages and other compact syntax so your code becomes easy to read and maintain
  • makes writing shell and build scripts easy with its powerful processing primitives, OO abilities and an Ant DSL
  • increases developer productivity by reducing scaffolding code when developing web, GUI, database or console applications
  • simplifies testing by supporting unit testing and mocking out-of-the-box
  • seamlessly integrates with all existing Java objects and libraries
  • compiles straight to Java bytecode so you can use it anywhere you can use Java

GR8Conf, a Groovy conference

The GR8 Conference is an affordable conference dedicated to the Groovy dynamic language, the Grails web framework, the Griffon Swing framework, the Spock testing framework, the Gradle build solution, and other great technologies based on Groovy. If you wish to learn more about these technologies, meet the creators, and socialize with this great crowd and community, this is definitely the place to be!

Experience the latest Groovy 1.7

Groovy 1.7, the latest major and stable version of the popular dynamic language for the JVM, has been released. To learn more about the novelties, make sure to read the release notes. In a nutshell, Groovy 1.7 provides support for Anonymous Inner Classes and Nested Classes, annotations, SQL, Groovy console and Grape enhancements, the nicer Power Assert assertion, an AST Viewer and an AST Builder, a fully rewritten GroovyScriptEngine, and much more!

Groovy, an award-winning creative and innovative project

 JAX is the most important Java conference in Germany. Every year, the organizers are running a contest to select the most innovative and creative projects. From over 40 proposals, the jury selected only ten nominees. Although great projects were selected, like the Matisse GUI builder in NetBeans, or the Nuxeo Enterprise Content Management solution, Groovy won the first prize! It is a great honor and a huge pleasure for us to receive such a prize, especially knowing the cool projects we were competing with, or the past winners like the Spring framework.

Dierk König, author of the best-selling "Groovy in Action" book, received the prize in the name of the Groovy community, after having presented several sessions on Groovy at this conference. This award proves and reaffirms how innovative, creative and influential the Groovy project is for the Java community.





"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. If you are a developer, tester or script guru, you have to love Groovy."

Samples

A simple hello world script:

def name='World'; println "Hello $name!"





A more sophisticated version using Object Orientation: 

class Greet {
  def name
  Greet(who) { name = who[0].toUpperCase() +
                      who[1..-1] }
  def salute() { println "Hello $name!" }
}

g = new Greet('world')  // create object
g.salute()              // Output "Hello World!"





Leveraging existing Java libraries: 

import static org.apache.commons.lang.WordUtils.*

class Greeter extends Greet {
  Greeter(who) { name = capitalize(who) }
}

new Greeter('world').salute()





On the command line:

groovy -e "println 'Hello ' + args[0]" World









Documentation [more]

Getting Started Guide

How to install and begin using Groovy as well as introductory tutorials.

User Guide

Provides information about using the Groovy language including language facilities, libraries and programming guidelines.

Cookbook Examples

Illustrates larger examples of using Groovy in the Wild with a focus on applications or tasks rather than just showing off the features, APIs or modules.

Developer Guide

Contains information mainly of interest to the developers involved in creating Groovy and its supporting modules and tools.

Testing Guide

Contains information of relevance to those writing developer tests or systems and acceptance tests.

Advanced Usage Guide

Covers topics which you don't need to worry about initially when using Groovy but may want to dive into to as you strive for Guru status.

Modules [more]



The following modules and contributions are currently available:

  • Gaelyk — Gaelyk is a lightweight Groovy toolkit for developing and deploying Groovy applications on Google App Engine.
  • GMaven
  • Groovy Transforms — Provides additional AST Transformations
  • 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
  • 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



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:

Monday, March 8, 2010
Last changed Mar 08, 2010 07:57 by Joachim Baumann

The Windows-Installer for Groovy 1.7.1 can now be downloaded from the Groovy Website (direct link). It takes care of the gory details of a Windows installation, copying files, setting environment variables and file associations.

It contains the Groovy 1.7.1 Binaries, API Docs and a PDF snapshot of the Wiki, the native launcher, easyb 0.9.6, Gant 1.9.1, Scriptom 1.6.0, Gaelyk 0.3.2, GPars 0.9, Spock 0.3 and the Griffon Builders. These contain, among others, GFXBuilder, SwingXBuilder and JideBuilder in versions compatible to Griffon 0.3. The installation of everything but the binaries including the native launcher is optional.

Currently supported languages for the installer are english, german, spanish, french and brazilian portuguese.

Posted at Mar 08, 2010 by Joachim Baumann | 0 comments
Friday, February 19, 2010
Last changed Feb 19, 2010 10:41 by glaforge

The Groovy development team and SpringSource are happy to announce the joint releases of two maintenance versions of Groovy: Groovy 1.6.8 and Groovy 1.7.1.

Both releases mainly provide bug fixes, plus a few enhancements in various areas (Groovy console, mocking/stubing support, GroovyDoc improvements, generics handling, and many more). You can look at the JIRA release notes to learn more about those numerous bug fixes and improvements (for 1.6.8 and 1.7.1 respectively).

You can download Groovy at the usual place

Thanks a lot to all involved!

Posted at Feb 19, 2010 by glaforge | 0 comments