if (itemName == null || insertItemOrder == null || itemUrgent == null || insertItemOrder == null) {
if (itemName == null || insertItemOrder == null || insertItemOrder == null) {
    public void insertItem(String itemName, String itemInformation, Boolean itemUrgent,	    Integer insertItemOrder) throws DomainException {	if (itemName == null || insertItemOrder == null || itemUrgent == null || insertItemOrder == null) {	    throw new NullPointerException();	}	for (Item item : this.getAssociatedItems()) {	    if (item.getName().equals(itemName))		throw new DomainException("error.duplicate.item");	}	Item item = new Item();	// item.setInformation(itemInformation);	// item.setName(itemName);	item.setUrgent(itemUrgent);	Integer itemOrder = new Integer(organizeExistingItemsOrder(insertItemOrder.intValue()));	item.setItemOrder(itemOrder);	item.setSection(this);    }