Calling Oracle User Define funcation from java

[Prashant Saraf]

Hi I have a user define function written in PL/SQL, One of the parameter to the function is list of Oracle User define Object, and here i stuck.. I how pass a user define object list to that function..

here is my PL/SQL

FUNCTION CreateServiceRequest(p_organization_number       IN  VARCHAR2 DEFAULT NULL,                             
                                p_product_id                IN  VARCHAR2 DEFAULT NULL,
                                p_group_contract_type       IN  VARCHAR2 DEFAULT NULL,
                                p_flexfields_obj_list       IN  XXIO_I869_FLEXFIELD_OBJ_LIST,  ---*** What should i pass to this function for XXIO_I869_FLEXFIELD_OBJ_LIST variable in java
                                p_notes_obj_list            IN  XXIO_I869_NOTES_OBJ_LIST
                                ) RETURN XXIO_I869_ServReqInfo_obj_list;

my java calling code

 String proc3StoredProcedure = 
                "select * from table (XXIO_I406_SUBSCRIPTIONS_PKG_1.CreateServiceRequest(?,?,?,?))";
            preparestmt = 
                    (OraclePreparedStatement)conn.prepareStatement(proc3StoredProcedure);
            preparestmt.setString(1, instanceId);
            preparestmt.setString(2, instanceCode);

What will be set Parameter for the 3,4. as 3 and 4 are the List(as TABLE in PL/SLQ) of user define object