Calling a stored procedure with array parameters

Hi,
I am trying to call the following stored procedure

rooms=# select sp_copyRoomItems1('{9,2}','{1}');
sp_copyroomitems1
-------------------
2
(1 row)

from jdbc

using the following test code

ArrayList fromEquipments = new ArrayList();
for (int i=0; i < selectedFromEquipmentItems.count(); i++) {
Equipment fromEquipment =
(Equipment)selectedFromEquipmentItems.objectAtIndex(i);

fromEquipments.add(Library.getPrimaryKey(fromEquipment));
}
CallableStatement cstmt = connection.prepareCall("{ call
sp_CopyRoomItems1( ? , ? ) } ");
cstmt.setObject(1,fromEquipments);
cstmt.setObject(2,fromEquipments);

However, I get an error when this is run

The table for java.util.ArrayList is not in the database. Contact the
DBA, as the database is in an inconsistent state.

The code that I have seen on the net is all about returning arrays from
stored procedures.

Is it possible to pass an array to a stored procedure?

TIA

Peter McGregor