Insert2

try {
            String sql = "INSERT INTO mhs VALUES ('"+txtnama.getText()+"','"+txtnim.getText()+"','"+jComboBox1.getSelectedItem()+"','"+txtalamat.getText()+"','"+txttelp.getText()+"')";
            java.sql.Connection conn=(Connection)Config.configDB();
            java.sql.PreparedStatement pst=conn.prepareStatement(sql);
            pst.execute();
            JOptionPane.showMessageDialog(null, "Penyimpanan Data Berhasil");
        } catch (Exception e) {
            JOptionPane.showMessageDialog(this, e.getMessage());
        }
        load_table();
        kosong();