you get it like this
public class MyAnnotationRunner {
public static void main(String[] args) {
Field[] fields = MyInterface.class.getFields();
for(Field field:fields){
for(Annotation ann:field.getAnnotations()){
if (ann instanceof MyAnnotation){
MyAnnotation my = (MyAnnotation)ann;
System.out.println(my.description());
}
}
}
}
}