What are the different types of IOC (dependency injection) ?

There are three types of dependency injection:

- Constructor Injection (e.g. Pico container, Spring etc): Dependencies are provided as
constructor parameters.

- Setter Injection (e.g. Spring): Dependencies are assigned through JavaBeans properties
(ex: setter methods).

- Interface Injection (e.g. Avalon): Injection is done through an interface.

Note: Spring supports only Constructor and Setter Injection