Summary

After reading this chapter, you should now have a good overview of the Spring Framework and its most-used design patterns. I highlighted the problem with the J2EE traditional application, and how Spring solves these problems and simplifies Java development by using lots of design patterns and good practices to create an application. Spring aims to make enterprise Java development easier and to promote loosely coupled code. We have also discussed Spring AOP for cross-cutting concerns and the DI pattern for use with loose coupling and pluggable Spring components so that the objects don't need to know where their dependencies come from or how they're implemented. Spring Framework is an enabler for best practices and effective object design. Spring Framework has two important features--First it has a Spring container to create and manage the life of beans and second it provides support to several modules and integration to help simplify Java development.