Groovy - An extensible multi-paradigm language for the JVM Platform
(GroovyDoc for Groovy and Java classes)

Groovy...
  • is an extensible and multi-paradigm language for the Java Virtual Machine
  • makes modern programming features available to Java developers with almost-zero learning curve
  • has a dynamic nature like Python and Ruby, which means that it is very powerful, easy to learn, and productive
  • optionally has static typing like Java and Kotlin, which makes it fast and provides extra type checking when desired
  • has first-class functional, stream processing and immutability support, meaning that it offers features similar to Scala and can offer many advantages when working in parallel processing or clustered environments
  • 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
  • compiles straight to Java bytecode so you can use it anywhere you can use Java; it seamlessly integrates with all existing Java objects and libraries
Packages 
Package Description
groovy.ant  
groovy.beans  
groovy.cli  
groovy.console.ui
An interactive command line terminal along with a Swing console for evaluating Groovy scripts and inspecting objects, AST and bytecode information.
groovy.console.ui.text
Text processing helpers for the interactive command line terminal.
groovy.contracts  
groovy.grape  
groovy.inspect
Classes for inspecting object properties through introspection.
groovy.io
Classes for Groovier Input/Output.
groovy.jmx  
groovy.jmx.builder  
groovy.json  
groovy.junit5.plugin  
groovy.lang
Core Groovy language classes for implementing data structures, closures, metadata and so forth.
groovy.lang.groovydoc  
groovy.mock.interceptor
The groovy.mock.interceptor is an all-groovy mock testing library.
groovy.namespace  
groovy.security
Security-related classes
groovy.servlet
Support for Groovlets which are Servlets written as a simple Groovy script.
groovy.sql
Groovy helper classes for working with SQL data as Groovy objects
groovy.swing.binding
Binding classes for SwingBuilder
groovy.swing.impl
Implementation classes for SwingBuilder
groovy.swing.model
An MVC model package for working with user interfaces and data structures and arbitrary Java and Groovy objects
groovy.swing.table  
groovy.test  
groovy.text
Contains the text processing utilities including templating APIs and default implementations.
groovy.text.markup
Contains a template engine facilitating generation of XML-like markup with optional type checking.
groovy.time
Classes for easily manipulating Dates and times.
groovy.transform  
groovy.transform.builder  
groovy.transform.options  
groovy.transform.stc  
groovy.ui  
groovy.util
Various Groovy utilities for working with nodes, builders, logging, and other things.
groovy.util.logging  
groovy.xml
Groovy markup builder classes for working with SAX and W3C DOM and Groovy markup.
groovy.xml.dom
Groovy XML Dom processing classes.
groovy.xml.markupsupport  
groovy.xml.slurpersupport
Helper classes for XmlSlurper.
groovy.xml.streamingmarkupsupport
XmlBuilder related classes to support streaming XML.
groovy.yaml  
org.apache.groovy.antlr  
org.apache.groovy.ast.builder  
org.apache.groovy.ast.tools  
org.apache.groovy.contracts  
org.apache.groovy.contracts.annotations.meta  
org.apache.groovy.contracts.ast  
org.apache.groovy.contracts.ast.visitor  
org.apache.groovy.contracts.classgen.asm  
org.apache.groovy.contracts.common.base  
org.apache.groovy.contracts.common.impl  
org.apache.groovy.contracts.common.impl.lc  
org.apache.groovy.contracts.common.spi  
org.apache.groovy.contracts.domain  
org.apache.groovy.contracts.generation  
org.apache.groovy.contracts.util  
org.apache.groovy.datetime.extensions  
org.apache.groovy.dateutil.extensions  
org.apache.groovy.ginq  
org.apache.groovy.ginq.dsl  
org.apache.groovy.ginq.dsl.expression  
org.apache.groovy.ginq.provider.collection.runtime  
org.apache.groovy.groovydoc.tools  
org.apache.groovy.internal.metaclass  
org.apache.groovy.internal.util  
org.apache.groovy.io  
org.apache.groovy.jaxb.extensions  
org.apache.groovy.json  
org.apache.groovy.json.internal  
org.apache.groovy.lang.annotation  
org.apache.groovy.macrolib  
org.apache.groovy.metaclass  
org.apache.groovy.nio.extensions  
org.apache.groovy.nio.runtime  
org.apache.groovy.parser.antlr4  
org.apache.groovy.parser.antlr4.internal  
org.apache.groovy.parser.antlr4.internal.atnmanager  
org.apache.groovy.parser.antlr4.util  
org.apache.groovy.plugin  
org.apache.groovy.plugin.testng  
org.apache.groovy.sql.extensions  
org.apache.groovy.swing.binding
Classes related to property binding.
org.apache.groovy.swing.extensions  
org.apache.groovy.test  
org.apache.groovy.test.transform  
org.apache.groovy.util  
org.apache.groovy.util.concurrent  
org.apache.groovy.util.concurrent.concurrentlinkedhashmap
This package contains an implementation of a bounded ConcurrentMap data structure.
org.apache.groovy.xml.extensions  
org.apache.groovy.xml.tools  
org.apache.groovy.yaml.util  
org.codehaus.groovy
Groovy Language for the JVM
org.codehaus.groovy.ant
Ant tasks for working with Groovy - such as groovyc for compiling Groovy source code to Java bytecode
org.codehaus.groovy.antlr  
org.codehaus.groovy.ast
Groovy AST nodes for the syntax of the language
org.codehaus.groovy.ast.builder  
org.codehaus.groovy.ast.decompiled  
org.codehaus.groovy.ast.expr
AST nodes for Groovy expressions
org.codehaus.groovy.ast.stmt
AST nodes for Groovy statements
org.codehaus.groovy.ast.tools  
org.codehaus.groovy.bsf
Defines the BSF Engine for using Groovy inside any BSF application.
org.codehaus.groovy.classgen
Generates Java classes for Groovy classes using ASM.
org.codehaus.groovy.classgen.asm
Helper classes for ASMClassGenerator.
org.codehaus.groovy.classgen.asm.indy  
org.codehaus.groovy.classgen.asm.indy.sc  
org.codehaus.groovy.classgen.asm.sc  
org.codehaus.groovy.classgen.asm.util  
org.codehaus.groovy.control
Compiler control classes.
org.codehaus.groovy.control.customizers  
org.codehaus.groovy.control.customizers.builder  
org.codehaus.groovy.control.io
Internal classes for Groovier Input/Output.
org.codehaus.groovy.control.messages
Error message classes.
org.codehaus.groovy.groovydoc
GroovyDoc internal classes.
org.codehaus.groovy.jsr223  
org.codehaus.groovy.macro.matcher  
org.codehaus.groovy.macro.methods  
org.codehaus.groovy.macro.runtime  
org.codehaus.groovy.macro.transform  
org.codehaus.groovy.reflection
Internal classes for assisting with reflection.
org.codehaus.groovy.reflection.android  
org.codehaus.groovy.reflection.stdclasses  
org.codehaus.groovy.reflection.v7  
org.codehaus.groovy.runtime
Runtime classes for Groovy - whether the dynamic interpreter is being used, the compiler or the bytecode generator.
org.codehaus.groovy.runtime.callsite  
org.codehaus.groovy.runtime.dgmimpl  
org.codehaus.groovy.runtime.dgmimpl.arrays  
org.codehaus.groovy.runtime.m12n  
org.codehaus.groovy.runtime.memoize  
org.codehaus.groovy.runtime.metaclass
Internal classes related to Groovy's metaclass implementation.
org.codehaus.groovy.runtime.powerassert  
org.codehaus.groovy.runtime.typehandling
Classes used to execute special actions based on the type.
org.codehaus.groovy.runtime.wrappers
Groovy wrapper classes for primitive types.
org.codehaus.groovy.syntax
Lexer, parser and trees.
org.codehaus.groovy.tools
Compiler entry points and miscellaneous development tools.
org.codehaus.groovy.tools.groovydoc
GroovyDoc tool.
org.codehaus.groovy.tools.groovydoc.antlr4  
org.codehaus.groovy.tools.groovydoc.gstringTemplates  
org.codehaus.groovy.tools.gse  
org.codehaus.groovy.tools.javac
Classes related to the joint compiler.
org.codehaus.groovy.tools.shell  
org.codehaus.groovy.tools.shell.util  
org.codehaus.groovy.transform  
org.codehaus.groovy.transform.sc  
org.codehaus.groovy.transform.sc.transformers  
org.codehaus.groovy.transform.stc  
org.codehaus.groovy.transform.trait  
org.codehaus.groovy.util  
org.codehaus.groovy.vmplugin
JVM version specific classes.
org.codehaus.groovy.vmplugin.v10  
org.codehaus.groovy.vmplugin.v8  
org.codehaus.groovy.vmplugin.v9