A bean factory is fine to simple applications, but to take advantage of the full
power of the Spring framework, you may want to move up to Springs more advanced
container, the application context. On the surface, an application context is
same as a bean factory.Both load bean definitions, wire beans together, and
dispense beans upon request. But it also provides:
1 A means for resolving text messages, including support for internationalization.
2 A generic way to load file resources.
3 Events to beans that are registered as listeners.