public void display(ResultSet rs) {
    try {
      boolean recordNumber = rs.next();
      if (recordNumber) {
        payNo = rs.getString(1);
        pasNo = rs.getString(2);
        pasName = rs.getString(3);
        mode = rs.getString(4);
        dt = rs.getString(5);
        amount = rs.getString(6);
        rev = rs.getString(7);

        text1.setText(payNo);
        combo1.setSelectedItem(pasNo);
        combo2.setSelectedItem(pasName);
        combo4.setSelectedItem(mode);
        p_date.setText(dt);
        combo8.setSelectedItem(amount);
        combo3.setSelectedItem(rev);

      } else {
        JOptionPane.showMessageDialog(
            null, "Record Not found", "ERROR", JOptionPane.DEFAULT_OPTION);
      }
    } catch (SQLException sqlex) {
      sqlex.printStackTrace();
    }
  }
  private void generator() {

    try {
      ResultSet rst =
          DBConnection.getDBConnection()
              .createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE)
              .executeQuery("SELECT Payment_No FROM Payment");
      text1.setText("1000");
      while (rst.next()) {
        String s;
        int number = rst.getInt(1);
        number = number + 1;

        s = "" + number;
        text1.setText(s);
        int x;
      }
    } catch (Exception n) {
      n.printStackTrace();
    }
  }