Can I use spring annotations on interfaces?

Question

I'm struggling with understanding spring framework. I use to work with Java EE.

When I write interfaces and implementations, Can I use annotation on interfaces?

@Repository // Can I do this?
interface MyRepository {
}

@Repository // Can I omit this?
class MyRepositoryImpl implements MyRepository {
}

What about @Service? Is it same?

http://stackoverflow.com/questions/146391/annotations-on-interfaces .. This is pretty much the same question that you are asking — ArunM, Aug 01 '13 at 09:04
@ArunM [One of the answer](http://stackoverflow.com/a/146422/330457) is what I wanted to know. Not the question, I think. — Jin Kwon, Aug 01 '13 at 09:07
[Where to put @Transactional](http://stackoverflow.com/questions/5551541/where-to-put-transactional-in-interface-specification-or-implementation). I second @Bozho answer — Luca Basso Ricci, Aug 01 '13 at 09:12

score 0 · Answer 1 · answered Aug 01 '13 at 15:23

According to Annotation definition we can use annotate interfaces. When we define a interface if that interface defined as @Target({ java.lang.annotation.ElementType.TYPE }) ,

then TYPE can be Class, interface (including annotation type), or enum declaration TYPE according to javadoc.

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Can I use spring annotations on interfaces?

1 Answers1