private void doInsert(String typeCoffee, int price) {
        System.out.print("\n[Performing INSERT] ... ");
        try {
            Statement st = conn.createStatement();
            st.executeUpdate("INSERT INTO COFFEES "
                    + "VALUES ('" + typeCoffee + "', " + price + " )");
        } catch (SQLException ex) {
            System.err.println(ex.getMessage());
        }
    }