RE: Incremental development

> If the class is not found you have a classpath problem. But I am =
afraid
> that unless you know what the exact error is, noone can help you =
elaborate
> on the cause...

It's more of a theoretical question (I haven't tried it for a while).

To rephrase it...

Is is possible to *modify* an Ozone class (add fields and methods) =
without
losing data from already existing instances of the class (in a database)
before the class was modified?

For example, if a "colour" field and accessor method is added to a =
CarImpl
class and methods to the Car interface, is it possible to use this class =
to
retrieve existing data in the database stored under the original class
(before the change).  Last time I tried something like this, I got a
incompatible class or class not found error (sorry, I don't remember =
which).

If no error is expected when doing this, I'll just go away and try it =
again.

Aidan.



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