IOC container

• Inversion of control is the one application doesn’t control the object and the spring container takes the control of object

Bean Factory

• This is the root interface for accessing the spring container

• A bean factory is like a factory class that contains a collection of beans

• The bean factory holds the bean definitions of the multiple beans within itself and then instantiates the bean whenever asked by the clients

• The beanfactory is the actual container which instantiates, configures and manages a number of beans

• These beans typically collaborate with one another and thus have the dependencies between themselves.

Application context

• Bean instantiation and wiring of beans

• It’s the central interface within the spring application that is used for providing configuration information to the application

• It implements the bean factory interface

• Application Event publication

• It uses eager loading, so every bean instantiate after the ApplicationContext is started up.