@Component and @Named are annotations that basically do the same thing, but come from different APIs.
@Component belongs to Spring API. It marks class to be autodetected as a bean and optionally allows you to specify a name for that bean (@Component("foo")). Without explicit name specification detected bean will get a default name derived from the name of its class.
@Named belongs to javax.inject API. It marks class to be autodetected as a bean and requires you to specify a name.
Spring supports both these APIs. It doesn’t make sense to use both annotations at the same class since they provide the same functionality.
See also:
- 3.10 Classpath scanning and managed components