As reported by Takeshi Kondo in http://www.qos.ch/pipermail/cal10n-dev/2009-September/000280.html

Quoting Takeshi:

I found a trivial bug.

>> MessageConveyor #68
> String resouceBundleName =
AnnotationExtractor.getResourceBundleName(key
> .getClass());

Enum#getClass() is specific as follows.

---

public enum MSG{
A,
B

{ // override method }

}

public static void main(String[] args){
System.out.println(MSG.A.getClass()); // -> $MSG
System.out.println(MSG.B.getClass()); // -> $MSG$1
System.out.println(MSG.B.getDeclaringClass()); // $MSG
}

---

If we need to get enum class form instance, we have to call
Enum#getDeclaringClass().