Java Reference
In-Depth Information
If there is a single initializer expression, then it is assumed to initialize
an element called
value
. If there is no such element by that name, then
you will get a compile-time error. Combining this shorthand with the
shorthand for arrays with one element, you can rewrite the second use
of
BugsFixed
to be
@BugsFixed("457605")
You can have more than one element in the annotation type and still call
one of them
value
. If you do, and all other elements have default values,
then you can still use the shorthand form to initialize the
value
element.
However, once you have more than one initializer expression, you must
explicitly name each element.
Finally, you can annotate an annotation type with itself. For example,
the
Documented
marker annotation indicates that the program element
that is annotated should have its documentation comments processed-
notated with itself:
@Documented
@interface Documented { }
Self-annotation is quite different from having an element of the annota-
tion type within the annotation typewhich, as you know, is not permit-
ted.
