Is there a way, for a given JTextField, to mask it? In other words, is there
a way by which to make it so that the data must be put in as HH:mm:ss say?
Such that the user would see (if there were nothing in the field):
HH:mm:ss

With a Document then that only allowed numeric entried in all but the 2nd
and 5th character positions (where no matter what was typed, you;d only see
":". I know how to do a Document that shows this, but how can you actually
make it "masked" so it appears like a masked field? Thanks, Ike