This book should help you understand the latest in Java 7; concurrent programming; build, testing, and web frameworks; and the best JVM languages so you can advance your career in software development. It's an exciting time to be a programmer, especially in the JVM space. Java 7 is widely used, Java 8 is getting closer to completion, while other JVM languages, like Groovy and Scala, have been increasing in popularity. With the accelerating pace of change in technology, it's important as a programmer to always be learning and looking forward to the latest and greatest technology. This book is meant for the following people: people who want to learn about the latest Java and JVM technology; Java developers who are curious about Groovy, Scala, etc.; and developers who believe that learning about other tools and languages make them better developers.