Date value compare (the sequal)

Hello, I've asked a question before on this subject (http://www.objectweb.org/wws/arc/xwiki-users/2006-03/msg00131.html), but now a slightly different one: Dates in Xwiki are of type java.util.Calendar. This allows me to go back in time from the current date/time a certain amount. But suppose I want all objects, of a class with a date attribute, where the date attribute has a value from a start date to an end date. For instance: all object where date between 01-05-2006 and 31-05-2006. Is this possible as well? I haven't succeeded yet. So any help would be appreciated. Thanks again, Joep Janssen