posted 19 years ago
The client tries to book a record. Therefor it has to execute an update. If the record hasn't changed by a different client, it updates, booking succeeds, no Exception. But if the record has changed, it throws the DataChangedException, updating/booking fails and the client has to display the actualized record which can be easily wraped by the DataChangedException.
SCJP 1.4<br />SCJD (BS2.1.2)