/** * Updates the three data members from the parameter. Checks that the ItemToShip is not null. * * @param item ItemToShip package */ public void logItem(ItemToShip item) { // Make sure that ItemToShip is not null if (item != null) { // ItemToShip is used to record the item's statistics numCompleted++; totalWaitTime += item.getWaitTime(); totalProcessTime += item.getProcessTime(); } }