java.nio.channels.MembershipKey API

[Alan Bateman]

Alan Bateman wrote:
> I'll think more about it. It may be that the right thing is that the 
> drop method should not throw IOException.
Looking at this further, there isn't any real need for drop to throw a 
checked exception (same for unblock). We can remove the IOException and 
make life a bit easier (although I don't expect they will be used 
frequently).

-Alan.