For those new to both Java and Groovy

Java developers benefit from using Groovy: much of the documentation on this website at Codehaus is for them.

But you who don't already know Java can also benefit from using Groovy: these pages are for you. If you want to access the power of the Java Virtual Machine and Development Kit libraries when programming, but don't want to learn the Java Language, you canuse Groovy instead. Or maybe you do want to learn Java, but do so the easy way: you can learn Groovy first. You'll be productive sooner, and can go on to learn more about Java at your own pace.

This documentation introduces Groovy's syntax and core classes, but is still being written. For now, it's correct and detailed, though a little raw. All code examples have been tested using Groovy 1.0 or later inside a script. It's aimed at those who have already programmed, just not in Java, maybe in Ruby, Python, Perl, or Visual Basic.

Numerical Processing
         Groovy Integer Math - choose from many types of integers

         Groovy BigDecimal Math - for high-precision decimal math

         Groovy Floating Point Math - for high-speed decimal math

Collections
         Lists and Sets - group various items into a collection

         Object Arrays - fixed-size arrays for faster collections

         Maps and Sorted Maps - assign collected values to keys

Text Processing
         Characters in Groovy - access the full power of Unicode

         Strings and StringBuffers - easily handle strings of characters

         [String Pattern Matching|http://groovy.codehaus.org/String+Pattern+Matching] - find patterns within strings (NEW ON 18 JULY 2007)

Input and Output
         Files in Groovy - access the file system easily

         Streams, Readers, and Writers - access data as a flow of information

         Networking in Groovy - COMING SOON

Control Structures
         Blocks, Closures, and Functions - compose your program from a wide variety of building blocks

         Expandos, Classes, and Categories - encapsulate your program's complexity

         Program Control - many various ways to structure your logic (NEW ON 13 JULY 2007)

Data Typing
         Static Typing and Interfacesput compile-time restrictions in your program - (NEW ON 13 JULY 2007)

         Inheritance- reuse your classes and methods for many purposes

         Class Reflection - examine and manipulate objects that aren't known at compile time

Other Topics Coming
         formatting
         dates and times
         enums
         Queues/Deques
         exceptions
         permissions
         annotations
         multi-threading
         tree processing, builders
         packages
         evaluate, class loading
         remote invocations
         internationalization

Miscellaneous
        Using Interceptors with the ProxyMetaClass - valid for 1.0-RC1 and earlier only