But could there be a glitch with swing components, when i login by calling this method “

  JOptionPane.showMessageDialog(LoginForm.this, "Login Successful!");
    LandingPage f = new LandingPage();
       f .setDefaultLookAndFeelDecorated(true);
    f.setVisible(true);
    Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
    f.setSize(screen.getSize());
    f.pack();
    
    this.dispose();" the update button "
 jButtonUpdateUserX = new javax.swing.JButton();

 jButtonUpdateUserX.setFont(new java.awt.Font("Arial", 0, 14)); // NOI18N

jButtonUpdateUserX.setForeground(new java.awt.Color(46, 45, 45));

 jButtonUpdateUserX.setText("UPDATE USER");

 jButtonUpdateUserX.setBorder(javax.swing.BorderFactory.createEtchedBorder(new 
  java.awt.Color(204, 255, 255), new java.awt.Color(204, 255, 255)));

 jButtonUpdateUserX.setEnabled(false);

jButtonUpdateUserX.addItemListener(new java.awt.event.ItemListener() {
  public void itemStateChanged(java.awt.event.ItemEvent evt) {
    jButtonUpdateUserXItemStateChanged(evt);
  }
    });
   jButtonUpdateUserX.addActionListener(new java.awt.event.ActionListener() {
   public void actionPerformed(java.awt.event.ActionEvent evt) {
    jButtonUpdateUserXActionPerformed(evt);
   }
    });

   usersJpanel.add(jButtonUpdateUserX);
  jButtonUpdateUserX.setBounds(10, 10, 150, 40);
  jButtonUpdateUserX.setEnabled(false);
  jButtonUpdateUserX.addActionListener(evt -> onUpdateUser());

“works properly by calling this method “

   private void onUpdateUser() {
    if (selectedUser != null) {
        CreateUser createUserFrame = new CreateUser("createUserPanel", "UPDATE", 
    selectedUser);
        createUserFrame.setVisible(true);
        createUserFrame.addWindowListener(new java.awt.event.WindowAdapter() {
            @Override
            public void windowClosed(java.awt.event.WindowEvent e) {
                refresh();
             }
          });
        }"

but when i refresh the object “

  private void refresh(){
   System.out.println("Refreshing main form...");
   java.awt.EventQueue.invokeLater(new Runnable() {
  public void run() {
           LandingPage f = new LandingPage();
  //           f .setDefaultLookAndFeelDecorated(true);
    f.setVisible(true);
  //        Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
 //        f.setSize(screen.getSize());
 //        f.pack();
     }
   });
   //               f .setDefaultLookAndFeelDecorated(true);
    this.dispose();
   }"

which is same as the one for logging in, it doesn’t.

The question i ask is, doesn’t the refresh call the constructor, since all initializations are done in construct, why can’t the same initialization be done just like at login?