The secret weapon for attacking complexity in any project is to break it down into smaller, cohesive, and more easily digestible pieces. With "Modular Java", you can easily develop applications that are more flexible, testable, maintainable, and comprehensible. "Modular Java" is a pragmatic guide to developing modular applications using OSGi, the framework for dynamic modularity in Java, and Spring Dynamic Modules, an OSGi extension to the Spring Framework. You'll start with the basics but quickly ramp up, creating loosely-coupled modules that publish and consume services, and you'll see how to compose them into larger applications. Along the way, you'll apply what you learn as you build a complete web application that is made up of several OSGi modules, using Spring-DM to wire those modules together. "Modular Java" is filled with tips and tricks that will make you a more proficient OSGi and Spring-DM developer. Equipped with the know-how gained from this book, you'll be able to develop applications that are more robust and agile.