Versions Compared


  • This line was added.
  • This line was removed.
  • Formatting was changed.

Groovy is ...

An agile dynamic language for the Java Platform with many features that are inspired by languages like Python, Ruby and Smalltalk, making them available to Java developers using a Java-like syntax.
Developing web applications , writing shell scripts easily, writing concise, meaningful, test cases using Groovy's JUnit integration, or prototyping and producing real industrial strength applications have never been so concise and groovy.

Groovy works cleanly with all existing Java objects and libraries and compiles straight to Java bytecode in either application development or scripting mode.

// The Greeter class

class Greeter
Code Block
Wiki Markup
h3. 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*
* provides the ability to *statically type check* and *statically compile* your code
* 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 classes and libraries*
* compiles straight to Java bytecode so you can use it anywhere you can use Java

Experience Groovy 2.0

Image Added

Groovy 2.0 is the latest major and stable version of the popular dynamic language for the JVM. To learn more about the novelties, make sure to read the detailed article on InfoQ. In a nutshell, Groovy 2.0 adds static type checking to let the compiler tell you about the correctness of your code, static compilation for the performance of the critical parts of your application, modularity by splitting the Groovy JAR into smaller feature-oriented modules as well as allowing you to create your own extension modules, JDK 7 Project Coin syntax enhancements so that Groovy marries itself well with Java, and JDK 7 Invoke Dynamic integration to benefit from the dynamic language support of the JVM.


"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."

Image Added



A simple hello world script:

No Format
def name='World'; println "Hello $name!"

A more sophisticated version using Object Orientation:

No Format
class Greet {
  def name
Greet(who) { 
name = who[0].toUpperCase() +
  def salute() { 
println "Hello 

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

Leveraging existing Java libraries:

No Format
import static org.apache.commons.lang.WordUtils.*

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

new Greeter('world').salute()

Documentation [more]


User Guide [more]

Children Display
pageGROOVY:User Guide

Advanced Topics [more]

Children Display
pageGROOVY:Advanced Topics

Getting Started Guide [more]

Children Display
pageGROOVY:Getting Started Guide

Testing Guide [more]

Children Display
pageGROOVY:Testing Guide

Developer Guide [more]

Children Display
pageGROOVY:Developer Guide

Cookbook Examples [more]

Children Display
pageGROOVY:Cookbook Examples

Modules [more]


Enjoy making your code groovier !!!!

Latest news


Groovy-related news in the blogosphere

RSS Feed

On the command line:

No Format
groovy -e "println 'Hello ' + args[0]" World

Latest news [more]

Blog Posts