How do I install signal handling logic iff sun.misc.Signal is available?

Background First generation of my code looked something like this:

class MyApp {
    public static void main(String[] args) {
        ...
        Signal.handle(term_sig, new SignalHandler() {
            public void handle(Signal sig) { ... }
        });
        ...
    }
}

I believe I understand how to reflectively test for and use signal handlers -- Class.forName("sun.misc.Signal"), reflectively call Signal.handle, and so forth.

My impulse was simply to instantiate another anonymous inner class with the dynamically obtained SignalHandler class, but I think that's just wishful syntax.