What is IOC and DI?

http://javarevisited.blogspot.in/2012/12/inversion-of-control-dependency-injection-design-pattern-spring-example-tutorial.html

Inversion of control,it is a container that holds the objects and DI is a dependencey injection whereas we can remove the one object dependency of others. we are creating a loosely couple with objects by the DI.we can implement through the Interfaces. DI can be inject on during Property creation and constructor creation.

IOC (Inversion of Control) and DI (Dependency Injection) is a design pattern to provide loose coupling. It removes the dependency from the program.