Creame un Login, en panel

public class LoginPanel extends JPanel {
 private JLabel jlUser;
 private JLabel jlPass;
 private JTextField jtfUser;
 private JPasswordField jtfPass;
 private JButton jbLogin;
 private JButton jbCancel;
 public LoginPanel() {
   jlUser = new JLabel("User Name:");
   jlPass = new JLabel("Password:");
   jtfUser = new JTextField(10);
   jtfPass = new JPasswordField(10);
   jbLogin = new JButton("Login");
   jbCancel = new JButton("Cancel");
   JPanel jpUser = new JPanel();
   jpUser.add(jlUser);
   jpUser.add(jtfUser);
   JPanel jpPass = new JPanel();
   jpPass.add(jlPass);
   jpPass.add(jtfPass);
   JPanel jpButtons = new JPanel();
   jpButtons.add(jbLogin);
   jpButtons.add(