Collections.sort() - sort on multiple fields?

I have a collection of objects in a List that I need to be able to sort on each field individually. For example, the data in the List is eventually displayed on a table in a web page. The user is able to click on a column header and the table is to be refreshed with the list contents sorted by that column (asc/desc).
I would rather not re-query the DB for this list (it's pretty static and already saved in memory). So if I use the Collections.sort(myList, new Comparator() { ...} ) method, is it possible for me to pass the field/direction of the sort into the Comparator? Or, do I have to define individual Comparators for every field that the user can sort by and surround it all by an ugly switch statement?

Honestly I think that a re-query to the DB is the best approach. Remember that any decent DB engine will cache queries so it will really only have to re-perform the sort algorithm.
Commercial databases are very fast and almost never the source of a performance bottleneck.
I realize this isn't the answer you want, but in my experience it is the best solution, if you really can't stand to re-query then as mentioned creating your own comparator is the way to go.

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