private static void displayTables() // tester function
	{
		for (int i = 0; i < DiningRoom.size(); i++) {
			Table thisTable = new Table((Table) DiningRoom.get(i));
			Vector thisTab = thisTable.getIDList();
			System.out.println("Table has " + thisTab.size() + " people.");
			for (int j = 0; j < thisTab.size(); j++) {
				System.out.println(thisTab.get(j));
			}
		}
	}