public void valueChanged(ListSelectionEvent e) {
                row = tabPilihKelompok.getSelectedRow();
                if (row != -1) {
                    kel = recordKelompok.get(row);
                    System.out.println("" + kel.getIdKelompok());
                    ambilKelompok.setSize(300, 300);
                    ambilKelompok.show();
                    JOptionPane.showMessageDialog(mailContent, pesaN);
                }
            }