I think it is because you are creating a statement
with the following parameters and I have a feeling
that MS Access is not supporting this operation..
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE
To test this make your
Stat=Con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
to
Stat=Con.createStatement();
Note may not be able to go to previous ResultSet value