groovy-doc binary package in Ubuntu Focal amd64

 Groovy is an agile dynamic language for the JVM combining lots of great
 features from languages like Python, Ruby and Smalltalk and making them
 available to the Java developers using a Java-like syntax.
 .
 Groovy is designed to help you get things done on the Java platform in a
 quicker, more concise and fun way - bringing the power of Python and Ruby
 inside the Java platform.
 .
 Groovy can be used as an alternative compiler to javac to generate
 standard Java bytecode to be used by any Java project or it can be used
 dynamically as an alternative language such as for scripting Java objects,
 templating or writing unit test cases.
 .
 This package includes the Groovy API javadocs, and examples.

Source package