@Override
  public void update(Customer entry) throws SQLException {
    String sql;
    sql =
        "UPDATE 'customer' SET "
            + "name = \'"
            + entry.getName()
            + "\', "
            + "firstName = '"
            + entry.getFirstName()
            + "', "
            + "address = \'"
            + entry.getAddress()
            + "\', "
            + "zip = \'"
            + entry.getZip()
            + "\', "
            + "city = \'"
            + entry.getCity()
            + "\', "
            + "phoneNo = \'"
            + entry.getPhoneNo()
            + "\', "
            + "eMail = \'"
            + entry.getEMail()
            + "\'"
            + "WHERE customerId = "
            + entry.getID()
            + ";";

    System.out.println(sql);
    Statement stmt = dbConnection.getConn().createStatement();
    stmt.executeUpdate(sql);
  }
  @Override
  public int insert(Customer entry) throws SQLException {

    String sql;
    ResultSet rs = null;
    sql =
        "INSERT INTO 'customer' VALUES (null, '"
            + entry.getName()
            + "', "
            + "\'"
            + entry.getFirstName()
            + "\', \'"
            + entry.getAddress()
            + "\', '"
            + entry.getZip()
            + "\', \'"
            + entry.getCity()
            + "\', \'"
            + entry.getPhoneNo()
            + "\', \'"
            + entry.getEMail()
            + "\');";
    System.out.println(sql);
    Statement stmt = dbConnection.getConn().createStatement();
    stmt.executeUpdate(sql);

    PreparedStatement pstmt =
        dbConnection.getConn().prepareStatement("select max(customerId) max from 'customer';");
    rs = pstmt.executeQuery();
    if (rs.next()) {;
      return rs.getInt("max");
    } else {
      return 0;
    }
  }