If you’re a newbie just starting to learn Spring, or even if you’ve heard a lot about Spring but not sure what it was, Martin Fowler has an excellent article about this: Inversion of Control and Dependency Injection pattern.

It was a bit old (written in 2004) but every single conceptual discussion still applies today.

If any of the following keyword doesn’t make any sense to you, then I beg you spare 20 minutes of your time to read this excellent article:

• Inversion of Control
• Dependency Injection
• Service Locator