Learning Groovy Part I. Getting Groovy 1. Software to Install 2. Groovy 101 3. Tools 4. GDK 5. Coming from Java Part II. Advanced Groovy 6. Groovy Design Patterns 7. DSLs 8. Traits 9. Functional Programming 10. Groovy GPars Part III. The Groovy Ecosystem 11. Groovy Awesomeness 12. Gradle 13. Grails 14. Spock 15. Ratpack Appendices A. Java Groovy B. Resources. This short guide teaches the popular JVM programming language Groovy and its ecosystem. Learn Groovy helps programmers learn Groovy a flexible open source Java based dynamic scripting language built for the JVM (Java Virtual Machine) and the Groovy ecosystem. This book covers Groovy fundamentals Gradle Grails Spock Groovy design patterns and advanced some Groovy programming. What youll learn Groovy fundamentals including the GDK or Groovy Development Kit Advanced Groovy such as writing Groovy DSLs Functional programming in Groovy GPars the built in concurrency library Gradle the build system Grails the web application framework Spock the testing framework Ratpack the reactive web library.