Into the Spring part 1

How does spring simplify Java development?
Key strategies:

• Lightweight and minimally invasive development with plain old Java objects (POJOs)
• Loose coupling through dependency injection and interface orientation
• Declarative programming  through aspects and common conventions 
• Boilerplate reduction through aspects and templates

Almost everything Spring does can be traced back to one or more of these four strategies*. 

*Spring in Action 3rd edition, Craig Walls