Learning Groovy: A guide to learning the popular JVM programming language, Groovy 2.x, and its ecosystem

A book to help programmers learn Groovy, a flexible open-source language built for the JVM (Java Virtual Machine), and the Groovy ecosystem. This book covers Groovy basics, the GDK, advanced Groovy, writing DSLs, Gradle, Grails, Spock (the test framework), Ratpack (the reactive web application library set), and more.