Connecting Forms in Intellij IDEA Java, swing

Question

I am making application, using IDEA Forms. I want to have different forms. First for login, then for displaying information from database after login. I created two different forms. First one: MenuMain and second AdminForm. After clicking a login button in MenuMain I want to open AdminForm, I tried with setContentPane and passing main panel from AdminForm, but it does not work. How to solve this?

public class MenuMainForm extends JFrame implements ActionListener {
private JPanel panel1;
private JTextPane logowanieText;
private JTextField userField;
private JTextField passField;
private JButton logowanieButton;
 public MenuMainForm(){

    logowanieButton.addActionListener(this);
 public void actionPerformed(ActionEvent e) {
    AdminForm adminForm = new AdminForm();
    this.setContentPane(adminForm);
}

public static void main( String[] args){
JFrame menuFrame = new JFrame("Kawiarnia");
    menuFrame.setContentPane(new MenuMainForm().panel1);
    menuFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    menuFrame.setExtendedState(JFrame.MAXIMIZED_BOTH);
    menuFrame.setVisible(true);
}

And the AdminForm Code:

public class AdminForm extends JPanel{
private JPanel adminPanel;
private JButton infoKawiarniaButton;
private JTable tabelaInfo;
private static String QUERY_INFO = "SELECT  * FROM NATALIAGAZDA.KAWIARNIE ";


public AdminForm() {
    DefaultTableModel model = (DefaultTableModel) tabelaInfo.getModel();
    model.addRow(new Object[]{"Atrybut", "Wartosc"});
public JPanel getAdminPanel() {
    return adminPanel;
}