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.beans  
groovy.cli  
groovy.grape  
groovy.inspect  
groovy.inspect.swingui  
groovy.io  
groovy.jmx.builder  
groovy.json  
groovy.junit5.plugin  
groovy.lang  
groovy.mock.interceptor  
groovy.model  
groovy.security  
groovy.servlet  
groovy.sql  
groovy.swing.binding  
groovy.swing.impl  
groovy.test  
groovy.text  
groovy.text.markup  
groovy.time  
groovy.transform  
groovy.transform.builder  
groovy.transform.options  
groovy.transform.stc  
groovy.ui  
groovy.ui.text  
groovy.util  
groovy.util.logging  
groovy.util.slurpersupport  
groovy.xml  
groovy.xml.dom  
groovy.xml.streamingmarkupsupport  
org.apache.groovy.ast.tools  
org.apache.groovy.datetime.extensions  
org.apache.groovy.dateutil.extensions  
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.jsondirect  
org.apache.groovy.lang.annotation  
org.apache.groovy.metaclass  
org.apache.groovy.plugin  
org.apache.groovy.plugin.testng  
org.apache.groovy.sql.extensions  
org.apache.groovy.util  
org.apache.groovy.util.concurrentlinkedhashmap
This package contains an implementation of a bounded ConcurrentMap data structure.
org.codehaus.groovy
Groovy Language for the JVM
org.codehaus.groovy.ant  
org.codehaus.groovy.antlr
Parser related classes.
org.codehaus.groovy.antlr.java  
org.codehaus.groovy.antlr.parser  
org.codehaus.groovy.antlr.treewalker
Classes for walking the AST.
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.binding  
org.codehaus.groovy.bsf  
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  
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.plugin  
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.testng  
org.codehaus.groovy.tools
Compiler entry points and miscellaneous development tools.
org.codehaus.groovy.tools.groovydoc  
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.tools.xml
XML utilities such as for converting XML into Groovy scripts.
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.v5
Java 5 specific classes.
org.codehaus.groovy.vmplugin.v6  
org.codehaus.groovy.vmplugin.v7  
org.codehaus.groovy.vmplugin.v8  
org.codehaus.groovy.vmplugin.v9  
vm8