Swing JFrame按钮操作侦听器不起作用

我想在按命名为后从一个移动JFrame到另一个。我在下面附上我的两个框架代码，如果有更正或任何想要给我指示或指导的人都可以给出。JFrameJButtonlogin

import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class Login implements ActionListener {
private JFrame jFrame = null;  
private JPanel jContentPane = null;
private JLabel id = null;
private JTextField userid = null;
private JLabel pass = null;
private JPasswordField password = null;
private JButton login = null;       
    private JFrame getJFrame() 
    {
        if (jFrame == null) 
        {
            jFrame = new JFrame();
    jFrame.setSize(new Dimension(346, 301));
            jFrame.setResizable( false );
    jFrame.setTitle("Shree Datta Digambar");
            jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    jFrame.setContentPane(getJContentPane());
        }
        return jFrame;
}
    private JPanel getJContentPane() 
    {
        if (jContentPane == null) 
        {
            pass = new JLabel();
    pass.setBounds(new Rectangle(21, 105, 116, 27));
        pass.setText("Password");
    id = new JLabel();
            id.setBounds(new Rectangle(21, 54, 119, 26));
    id.setText("Enter User Id");
            jContentPane = new JPanel();
    jContentPane.setLayout(null);
    jContentPane.add(id, null);
    jContentPane.add(getUserid(), null);
            jContentPane.add(pass, null);
    jContentPane.add(getPassword(), null);
    jContentPane.add(getLogin(), null);
        }
        return jContentPane;
}
    private JTextField getUserid() 
    {
        if (userid == null) 
        {
            userid = new JTextField();
    userid.setBounds(new Rectangle(164, 53, 140, 26));
        }
        return userid;
}   
private JPasswordField getPassword() 
    {
        if (password == null) 
        {
            password = new JPasswordField();
    password.setBounds(new Rectangle(165, 106, 137, 27));
        }
        return password;
}
private JButton getLogin() 
    {
        if (login == null) 
        {
            login = new JButton();
    login.setBounds(new Rectangle(165, 169, 136, 27));
    login.setText("Login");
            login.addActionListener((ActionListener) this);
        }
        return login;
}

public static void main(String[] args) 
    {
        Login l=new Login();
        JFrame f=new JFrame();           
        f=l.getJFrame();
        f.setLocation(300,150);
        f.setVisible(true);
    }
    public void actionPerformed(ActionEvent e) 
    {
        if(e.getSource()==login)
        {
            if(userid.getText().equals("")||password.getText().equals(""))
            {
                JOptionPane.showMessageDialog(null, "Please Enter Details");
            }
            else
            {
                if(userid.getText().equals("digambar")&&password.getText().equals("dalvi"))
                {                                 
                    JOptionPane.showMessageDialog(null,"Welcome To Customer Details of Papers");
                    getJFrame().dispose();  
                    JMenuBar menuBar = new JMenuBar();
                    MainMenu f = new MainMenu();                              
                }
                else
                {
                    JOptionPane.showMessageDialog(null,"Sorry Please Enter Valid Details");
                    userid.setText("");
                    password.setText("");
                }
            }
        }

    }       
}

第二帧代码是

       import java.awt.event.ActionEvent;
       import java.awt.event.ActionListener;
       import javax.swing.JFrame;
       import javax.swing.JMenu;
       import javax.swing.JMenuBar;
       import javax.swing.JMenuItem;
       public class MainMenu extends JFrame implements ActionListener
       {  
public static void main(String[] args) 
{
    MainMenu f=new MainMenu();
    f.setVisible(true);
    f.setSize(646,401);
    f.setResizable( false );
    f.setTitle("Shree Datta Digambar");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JMenuBar menuBar = new JMenuBar();
    f.setJMenuBar(menuBar);

    JMenu customer=new JMenu("Customer");
    menuBar.add(customer);
    JMenu paper=new JMenu("Paper");
    menuBar.add(paper);
    JMenu edit=new JMenu("Edit");
    menuBar.add(edit);              
    JMenu view=new JMenu("View");
    menuBar.add(view); 
    JMenu bill=new JMenu("Bill");
    menuBar.add(bill);
    JMenu help=new JMenu("Help");
    menuBar.add(help);

    JMenuItem newItem = new JMenuItem("New Customer");
    customer.add(newItem);
    JMenuItem deleteItem = new JMenuItem("Delete Customer");
    customer.add(deleteItem);

    JMenuItem addpaperItem = new JMenuItem("Add Paper");
    paper.add(addpaperItem);
    JMenuItem deletepaperItem = new JMenuItem("Delete Paper");
    paper.add(deletepaperItem);

    JMenuItem customer_detail = new JMenuItem("Customer Detail");
    edit.add(customer_detail);
    JMenuItem paper_detail = new JMenuItem("Paper Detail");
    edit.add(paper_detail);

    JMenuItem perticular_customer_detail = new JMenuItem("Perticular Customer Detail");
    view.add(perticular_customer_detail);

    JMenuItem customer_bill = new JMenuItem("Customer Bills");
    bill.add(customer_bill);

    newItem.addActionListener(new MainMenu());
    deleteItem.addActionListener(new MainMenu());
    addpaperItem.addActionListener(new MainMenu());
    deletepaperItem.addActionListener(new MainMenu());
    customer_detail.addActionListener(new MainMenu());
    paper_detail.addActionListener(new MainMenu());
    perticular_customer_detail.addActionListener(new MainMenu());
    customer_bill.addActionListener(new MainMenu());

    customer.addActionListener(new MainMenu());        
    paper.addActionListener(new MainMenu());
    edit.addActionListener(new MainMenu());
    view.addActionListener(new MainMenu());
    bill.addActionListener(new MainMenu());
    help.addActionListener(new MainMenu());
}
@Override
public void actionPerformed(ActionEvent e) {
    throw new UnsupportedOperationException("Not supported yet.");
}
}