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is an agile dynamic language for the Java Platform with many features that inspired languages like Python, Ruby and Smalltalk, making them available to Java developers using a Java-like syntax.

is ideally designed for the following purposes :

  • Developing web applications in a quick, concise and fun way. The Grails demonstrates Groovy's capability in this area. 
  • Bringing the power  of a scripting language to the JVM with seamless integration with the Java Platform}
  • Writing concise, meaningful, test cases using Groovy's JUnit integration.}
  • Prototyping and producing real industrial strength applications}
  • Writing shell scripts easily

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

provides powerful additional :

  • language conceptual enhancements
    • Support for closures - re-usable blocks of code
    • Native syntax for lists and maps
    • Support the Gof Builder pattern via the notion of builders
    • Syntax level regex operators and escape sequences
    • Native JavaBean support
    • Operator overloading  to simplify working with datatypes Collections and Maps
    • Polymorphic iteration and autoboxing
    • Extension of Java Standard Library through the GDK
    • ...
  • useful standard features to enhance developer productivity such as:
  • great user defined modules
    • Grails : Groovy on rails for easy multi-tier application development
    • Gram : a simple xdoclet-like tool for processing doclet tags or Java 5 annotations
    • COM Scripting
    • GroovySWT : wrapper around SWT , the eclipse graphical library
    • GSOAP : accessing through groovy web services
    • GSP : Groovy server pages
    • GSQL : accessing databases through Groovy
    • Process : handling external processes
    • XMLRPC : the corner stone of Ajax
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