Error when setting useTimezone=true

[Paul Darling]

I've read on this list that to have getTimestamp() use the Calendar object parameter, useTimezone must be true in the connection URL. However, including useTimezone=true in the URL is causing a java.lang.ExceptionInInitializerError to be thrown when using the URL.

I don't see the exception if serverTimezone=<some TZ value> is also included included in URL. Does serverTimezone need to be included if useTimezone=true? I wouldn't have thought so, because I want the actual timezone of the server to be used, not some value that I define that may not always match the server time zone.

Any help appreciated. Thanks,
Paul