问JMenu加载器

EN

mnAddUser.addMenuListener(new MenuListener() {

            @Override
            public void menuSelected(MenuEvent e) {
                // TODO Auto-generated method stub

                lblUserId.setBounds(150, 86, 111, 30);
                userIDField.setBounds(273, 80, 268, 43);    

                lblUserName.setBounds(150, 165, 111, 30);
                userNameField.setBounds(273, 159, 268, 43);

                lblUserName.setVisible(true);
                userNameField.setVisible(true);

                btnAddUser.setBounds(187, 235, 150, 43);
                btnReset.setBounds(390, 235, 150, 43);

                btnAddUser.setText("Add User");
            }

            @Override
            public void menuDeselected(MenuEvent e) {
                // TODO Auto-generated method stub

            }

            @Override
            public void menuCanceled(MenuEvent e) {
                // TODO Auto-generated method stub

            }           

        });