I need create new order(copy existing order). How I can do this?

My problem is that I want to collect all close order in List.
I do this in this way (in onMessage method):

 public void onMessage(IMessage message) throws JFException {
         if(message.getOrder()!=null){ 
           IOrder order = message.getOrder();
           if(message.getType() == IMessage.Type.ORDER_CLOSE_OK){
                if(order.getOrderCommand() == IEngine.OrderCommand.BUY || order.getOrderCommand() == IEngine.OrderCommand.SELL){
                  ClosedOrder.add(order); 
               }
           } 
        }
    }

The problem arises when the order is partially closed, because if it is close first part, then we actually have two orders, but in the same instance (reference) and if I add second part of order to my list - ClosedOrder, then before added the first part is replaced by second part of order. (because everyting is by reference in java)

How can I add these orders so that each be treated separately?

Thanks

Just submit order with the data of another order, e.g. (assuming the IOrder o is a closed or cancelled order, otherwise you need to set another label):

IOrder newOrder = engine.submitOrder(o.getLabel(), o.getInstrument(), o.getOrderCommand(), o.getAmount(), o.getOpenPrice());

Partially closed orders remain in state IOrder.State.FILLED, fully closed ones have state IOrder.State.CLOSED, see:
https://www.dukascopy.com/wiki/#Order_state/Market_order_states_diagram
Also see example which applies special logic only on full order close:
https://www.dukascopy.com/wiki/#Close_Orders/Partial_close