On 01/16/2013 05:27 PM, Brian Goetz wrote:
The primary purpose of this annotation is to *capture design intent*. It is
not required. The compiler will help you enforce the design intent if you
provide it. The compiler will not synthesize this annotation, since that would
be guessing at the design intent. It is possible to create classfiles that
subvert the design intent.
The point about other languages was simply to point out that the universe of
tools that might usefully use this design intent is bigger than sometimes
assumed.
I don't think run-time behavior should depend on optional annotations
documenting design intent (like @Override).
Supporting the discovery of functional interfaces is a good idea. But a
method like Class#isFunctionalInterface() would sever this purpose
better than an entirely optional annotation.
--
Florian Weimer / Red Hat Product Security Team
