Just released an update to the VI Java API 2.0 beta. It includes fixes to two bugs that might affects the methods whose parameters include either xsd:dateTime or enumeration typed properties.
For what's New in VI Java 2.0, read http://communities.vmware.com/thread/192910
Steve JIN, VMware Engineering
VI Java API 2.0: 4+ faster than AXIS with 1/4 of the size. Check out @ http://vijava.sf.net/