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Groovy

Full course · 21 lessons

Apache Groovy is a powerful, optionally typed, dynamic language for the JVM. It integrates seamlessly with Java and powers Gradle builds, Jenkins pipelines, and modern DSLs with concise syntax and metaprogramming capabilities.

Knowledge Course
01

Getting Started with Groovy

Install, run scripts, and hello world.

45 min→
02

Variables and Types

Dynamic typing and type inference.

45 min→
03

Control Flow

Conditionals and loops.

45 min→
04

Lists and Maps

Groovy collection literals.

45 min→
05

Closures

First-class functions.

45 min→
06

String Handling

String methods and templates.

45 min→
07

Classes and Traits

OOP in Groovy.

45 min→
08

Safe Navigation and Null Handling

Null-safe operators.

45 min→
09

Metaprogramming

Runtime method magic.

60 min→
10

Concurrency with GPars

Parallel and async programming.

60 min→
11

File I/O

Groovy file helpers.

45 min→
12

JSON and XML

Data interchange.

45 min→
13

Scripting and groovysh

REPL and script tools.

45 min→
14

Templates

Text and HTML generation.

45 min→
15

Gradle Builds

Build automation with Groovy DSL.

60 min→
16

Testing with Spock

BDD-style testing framework.

60 min→
17

Web Development with Grails

Full-stack web framework.

60 min→
18

Ratpack and Microservices

Lightweight web services.

60 min→
19

Categories

Scoped method injection.

45 min→
20

AST Transformations

Compile-time code generation.

60 min→
21

Ecosystem and Next Steps

Libraries and community.

45 min→
Curated Resources

Free Books

Groovy Succinctly (Syncfusion)

A free 104-page introductory book covering Groovy basics and practical application development.

Groovy in Action (Free Chapters)

Free preview chapters from the definitive Groovy handbook covering control structures and builders.

Official Documentation

Apache Groovy Documentation

Complete reference manual, language spec, user guides, and API documentation.

Groovy Development Kit (GDK)

Essential guide to Groovy enhancements over Java — I/O helpers, collection methods, and file management.

Interactive Courses

Exercism — Groovy Track

66 coding exercises from simple strings to advanced logic puzzles with mentoring.

Groovy Online Compiler (JDoodle)

Zero-setup in-browser Groovy execution environment for testing snippets.

Video Courses

Groovy Tutorial (TutorialsPoint)

Step-by-step video and text tutorials covering closures, XML/JSON parsing, and testing.

Groovy for Jenkins Pipelines

Practical tutorials focused on using Groovy for CI/CD pipeline development.

Practice & Challenges

Exercism — Groovy Track

Free practice with automated analysis and peer mentoring.

Codewars — Groovy Kata

Solve community-created challenges in Groovy.

Reference & Cheatsheets

Groovy Cheatsheet

Concise reference for Groovy syntax, closures, and collections.

News & Updates

Apache Groovy Blog

Official Apache Groovy announcements and release notes.

Reddit r/groovy

Community for Jenkins, Gradle, and Groovy discussions.

Community

Apache Groovy Mailing List

Official mailing lists and developer Slack channels.

Stack Overflow — Groovy Tag

Q&A for Groovy, Gradle, and Jenkins pipeline questions.