> The following code doesn't work
> (org.firebirdsql.jdbc.FBDriverNotCapableException):
> contactsRowSet1.updateRow();
> contactsRowSet1.commit();
>
> So, how can I perform insert our update data ?

I just checked Javadocs, it seems that you can do update/insert using the
RowSetWriter interface. Though I did not try this.

If this works, can you please create a small description, so we can put it
in the Wiki?

Roman