title: Window always opens blank even though code is written
body: <p>I am making a program which will open a class GUI called "Menu" when correct login info is put into a text field password field and a button called "login" is pressed. The problem is that the Menu window will open blank, not displaying what I have programmed into the Menu. </p>
  
  <p>This is my code for Login class,</p>
  
  <pre><code>package ems;
  
  import java.awt.EventQueue;
  import javax.swing.JFrame;
  import javax.swing.JLabel;
  import javax.swing.JOptionPane;
  import javax.swing.JTextField;
  import javax.swing.JPasswordField;
  import javax.swing.JButton;
  import javax.swing.JPanel;
  import java.awt.SystemColor;
  import java.awt.Color;
  import java.awt.Font;
  import java.awt.event.ActionListener;
  import java.awt.event.ActionEvent;
  
  public class Login extends JFrame implements ActionListener{
  
      private JFrame loginFrame;
      private JTextField usernameField;
      private JPasswordField passwordField;
  
      /**
       * Launch the application.
       */
      public static void main(String[] args) {
          EventQueue.invokeLater(new Runnable() {
              public void run() {
                  try {
                      Login window = new Login();
                      window.loginFrame.setVisible(true);
                  } catch (Exception e) {
                      e.printStackTrace();
                  }
              }
          });
      }
  
      /**
       * Create the application.
       */
      public Login() {
          initialize();
      }
  
      /**
       * Initialize the contents of the frame.
       */
      private void initialize() {
          loginFrame = new JFrame();
          loginFrame.setTitle("Login");
          loginFrame.setBounds(100, 100, 450, 300);
          loginFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          loginFrame.getContentPane().setLayout(null);
  
          JLabel lblUsername = new JLabel("Username");
          lblUsername.setBounds(112, 116, 74, 16);
          loginFrame.getContentPane().add(lblUsername);
  
          JLabel lblPassword = new JLabel("Password");
          lblPassword.setBounds(112, 165, 74, 16);
          loginFrame.getContentPane().add(lblPassword);
  
          usernameField = new JTextField();
          usernameField.setBounds(198, 110, 134, 28);
          loginFrame.getContentPane().add(usernameField);
          usernameField.setColumns(10);
  
          passwordField = new JPasswordField();
          passwordField.setBounds(198, 159, 134, 28);
          loginFrame.getContentPane().add(passwordField);
  
          JButton btnLogin = new JButton("Login");
          btnLogin.addActionListener(new ActionListener() {
              public void actionPerformed(ActionEvent e) {
                  String uname = usernameField.getText();
                  String pword = passwordField.getText();
  
                  if (uname.equals("test") &amp;&amp; pword.equals("test")){
                      JOptionPane.showMessageDialog(loginFrame, "Login successful.");
                      loginFrame.setVisible(false);
                      Menu menu = new Menu ();
                      menu.setVisible (true);
  
                  }else{
                      JOptionPane.showMessageDialog(loginFrame, "Login unsuccessful.");
                  }
              }
          });
          btnLogin.setBounds(238, 210, 90, 30);
          loginFrame.getContentPane().add(btnLogin);
  
          JButton btnExit = new JButton("Exit");
          btnExit.addActionListener(new ActionListener() {
              public void actionPerformed(ActionEvent e) {
                  System.exit(0);
              }
          });
          btnExit.setBounds(108, 210, 90, 30);
          loginFrame.getContentPane().add(btnExit);
  
          JPanel panel = new JPanel();
          panel.setBackground(new Color(192, 192, 192));
          panel.setBounds(91, 86, 258, 163);
          loginFrame.getContentPane().add(panel);
  
          JLabel lblLoginToThe = new JLabel("LOGIN TO THE ELECTRICITY MONITORING SYSTEM");
          lblLoginToThe.setForeground(new Color(255, 255, 255));
          lblLoginToThe.setFont(new Font("Arial", Font.BOLD, 16));
          lblLoginToThe.setBounds(26, 23, 418, 16);
          loginFrame.getContentPane().add(lblLoginToThe);
  
          JPanel panel_1 = new JPanel();
          panel_1.setBackground(new Color(46, 139, 87));
          panel_1.setBounds(0, 0, 450, 63);
          loginFrame.getContentPane().add(panel_1);
      }
  
      @Override
      public void actionPerformed(ActionEvent arg0) {
          // TODO Auto-generated method stub
  
      }
  }
  </code></pre>
  
  <p>This is the code for the Menu class, </p>
  
  <pre><code>package ems;
  
  import java.awt.Color;
  import java.awt.EventQueue;
  import java.awt.Font;
  import javax.swing.JFrame;
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  import javax.swing.JButton;
  import java.awt.event.ActionListener;
  import java.awt.event.ActionEvent;
  import ems.Login;
  
  public class Menu extends Login implements ActionListener{
  
      private JFrame menuFrame;
  
      /**
       * Launch the application.
       */
      public static void main(String[] args) {
          EventQueue.invokeLater(new Runnable() {
              public void run() {
                  try {
                      Menu window = new Menu();
                      window.menuFrame.setVisible(true);
                  } catch (Exception e) {
                      e.printStackTrace();
                  }
              }
          });
      }
  
      /**
       * Create the application.
       */
      public Menu() {
          initialize();
      }
  
      /**
       * Initialize the contents of the frame.
       */
      private void initialize() {
          menuFrame = new JFrame();
          menuFrame.setTitle("Menu");
          menuFrame.setBounds(100, 100, 450, 300);
          menuFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          menuFrame.getContentPane().setLayout(null);
  
          JLabel lblLoginToThe = new JLabel("THE ELECTRICITY MONITORING SYSTEM");
          lblLoginToThe.setForeground(new Color(255, 255, 255));
          lblLoginToThe.setFont(new Font("Arial", Font.BOLD, 16));
          lblLoginToThe.setBounds(64, 22, 331, 16);
          menuFrame.getContentPane().add(lblLoginToThe);
  
          JPanel panel_1 = new JPanel();
          panel_1.setBackground(new Color(46, 139, 87));
          panel_1.setBounds(0, 0, 450, 63);
          menuFrame.getContentPane().add(panel_1);
  
          JButton btnLogout = new JButton("Logout");
          btnLogout.addActionListener(new ActionListener() {
              public void actionPerformed(ActionEvent e) {
                  menuFrame.setVisible(false);
                  Login login = new Login ();
                  login.setVisible(true);
              }
          });
          btnLogout.setBounds(307, 222, 117, 29);
                  menuFrame.getContentPane().add(btnLogout);
  
          JButton btnExit = new JButton("Exit");
          btnExit.addActionListener(new ActionListener() {
              public void actionPerformed(ActionEvent e) {
                  System.exit(0);
              }
          });
          btnExit.setBounds(10, 222, 117, 29);
          menuFrame.getContentPane().add(btnExit);
  
  
  
      }
  }
  </code></pre>
  
  <p>Both of these classes are under a package called ems.
  I am very new to programming and help would be greatly appreciated.
  Thank you</p>