public void processReturnItem(String upc, int retid, int qty) throws ReturnException {
		try {
			PreparedStatement ps = con.prepareStatement(
					"INSERT into ReturnItem values (?, ?, ?)");
			ps.setString(1, upc);
			ps.setInt(2, retid);
			ps.setInt(3, qty);
			ps.executeQuery();
			
			con.commit();
			
		} catch (SQLException e) {
			rollback();
			e.printStackTrace();
			throw new ReturnException();
		}
	}