Learn GROOVY with Real Code Examples
Updated Nov 19, 2025
Learning Path
Learn Groovy basics
Master closures & collections
Explore Java interop
Learn Gradle scripting
Build Jenkins pipelines & DSLs
Skill Improvement Plan
Week 1: Syntax, closures, collections
Week 2: Java interop, classes, GDK
Week 3: Gradle build logic
Week 4: Jenkins & DSL development
Interview Questions
Dynamic vs static Groovy?
What is a closure?
Explain AST transformations.
How does Groovy interoperate with Java?
What is @CompileStatic?
Cheat Sheet
Closure: { param -> }
List: [1,2,3]
Map: [a:1, b:2]
Safe nav: obj?.prop
Elvis: x ?: default
Books
Groovy in Action
Making Java Groovy
Gradle in Action
Tutorials
Groovy official guides
Baeldung Groovy
Gradle tutorials
Jenkins pipeline courses
Official Docs
Groovy.apache.org documentation
Gradle docs
Jenkins Pipeline Groovy docs
Community Links
StackOverflow Groovy
Apache Groovy community
Jenkins community
Gradle forums
Community Support
Apache Groovy community
StackOverflow Groovy
Gradle forums
Jenkins community
Spock community