@Override
            public void actionPerformed(ActionEvent e) {
                String newName;
                String newPass;

                newName=nameText.getText();     //û
                newPass=passText.getText();     //
                changePass(newName, newPass);
                JOptionPane.showMessageDialog(null,"½Ȩ޸ĳɹ"); //ʾʾ
                dispose();


            }