Date difference between Java and db2

Hello,
I am quite puzzled. I have the following environment:
-iseries DB2
-Jdk 1.5
-Hibernate 3 (jpa)
-Tomcat 5.5
When I have "31st December 2006" in the database, the webapp displays "30th December 2006" and so on.
I don't understand this one-day difference?????
Does anyone has some clue of why I get this?
Thanks in advance,
Julien.
PS: The fields are typed java.util.Date

When I have "31st December 2006" in the database, the
webapp displays "30th December 2006" and so on.
I don't understand this one-day difference?????
Does anyone has some clue of why I get this?Because there is a lot of code between 'database' and 'webapp displays'.
That of course also assumes that you really do have the date that you think in the database. (Not knowing db2 I can only note that most other databases do not store dates. They store timestampes, which is different.)

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