exception classes

[Suzanne Dirkers]

Hi all,

        I'm wondering how one is supposed to obtain information about what
exactly an exception is about when one gets one in Xalan. I don't seem to
see any exception classes like there are in Java.   Do we need to write our
own? And if so, what are the rules about writing these? And, how are most
people today determining what the cause of their exception is so they can
print it out in a message to the user?

Thanks,
Suzanne