The Groovy programming language is supported by the Apache Software Foundation and the Groovy community.

The Apache Groovy™ documentation is available as a single-page document, or a PDF, or feel free to pick at a direct section below. You can also browse documentation for other versions.

Syntax This chapter covers the syntax of the Groovy programming language. The grammar of the language derives from the Java grammar, but enhances it with specific constructs for Groovy, and …

Groovy lets you instantiate java.lang.String objects, as well as GStrings (groovy.lang.GString) which are also called interpolated strings in other programming languages.

Core Groovy language classes for implementing data structures, closures, metadata and so forth.

Groovy adopts a naming convention that avoids one ambiguity that might seem a little strange but was popular at the time of Groovy’s design and has remained (so far) for historical reasons.

From the download page, you will be able to download the distribution (binary and source), the Windows installer (a community artifact) and the documentation for Groovy.

Latest version documentation api gapi groovy-jdkNext version documentation api gapi groovy-jdk

Oct 15, 2025 · All (non-comparator) Groovy operators have a corresponding method that you can implement in your own classes. The only requirements are that your method is public, has the correct …

Unlike Java with which Groovy shares the assert keyword, the latter in Groovy behaves very differently. First of all, an assertion in Groovy is always executed, independently of the -ea flag of the JVM.