else if (selectedIndex == -1) select(0);
add(String item){		if (item == null)    throw new NullPointerException ("item must be non-null");		pItems.addElement(item);  int i = pItems.size () - 1;  if (peer != null)    {			ChoicePeer cp = (ChoicePeer) peer;      cp.add (item, i);		}}