A thought about Spring

I started reading the book "J2EE Design and Development" by Rod Johnson. I should have read this much earlier. It is very interesting and thought provoking book. Intrigued by the reading, I wanted to try out Spring and feel the "IoC". Downloaded the spring framework and started coding my first bean. After gettimg my feet wet, I realized the power of IoC. A very cool concept. Hail Spring!!!