'How to show the Button in the bottom of the JScrollPane Inside a JFrame

I am working on an application in which I am trying to show a banner in a JFrame. Inside the JFrame, I using a JScrollbar which is using JEditorPane to display content of a HTML page.

    public static JFrame ShowBanner() throws IOException {
        int width = 0;
        int height = 0;
        String urlText = null;
        String ScrnResol = getScreenResolution();
        String[] ScreenResolution = ScrnResol.split(",");
        try {
            width = Integer.parseInt(ScreenResolution[0]);
            height = Integer.parseInt(ScreenResolution[1]);
        } catch (NumberFormatException nfe) {
            logger.error("NumberFormatException: " + nfe.getMessage());
        }
        //Creating Frame
        frmOpt = new JFrame("Banner");
        frmOpt.setExtendedState(JFrame.MAXIMIZED_BOTH);
        frmOpt.setPreferredSize(new Dimension(width, height));
        frmOpt.setUndecorated(true);
        frmOpt.setBackground(new Color(1.0f, 1.0f, 1.0f, 0.1f));
        frmOpt.setVisible(true);
        frmOpt.setAlwaysOnTop(true);
        frmOpt.setLocationRelativeTo(null);
        //bringToForeground(getHWND(frmOpt));
        JPanel panel = new JPanel();
        LayoutManager layout = new FlowLayout();
        panel.setLayout(layout);
        JEditorPane jEditorPane = new JEditorPane();
        jEditorPane.setEditable(false);
        try {
            
            String urlText=IOUtils.toString(BringUpFrame.class.getClassLoader().getResourceAsStream("banner.htm"));
            jEditorPane.setContentType("text/html");
            jEditorPane.setText(urlText);
        } catch (Exception e) {
            logger.error("Exception while executing showBanner: {}", e);
            jEditorPane.setContentType("text/html");
            jEditorPane.setText("<html>Page not found.</html>");
        }
        JScrollPane jScrollPane = new JScrollPane(jEditorPane);
        scrollPane.setColumnHeaderView(createButton());
        jScrollPane.setPreferredSize(new Dimension(width, height));
        panel.add(jScrollPane);
        frmOpt.add(panel);
        frmOpt.pack();
        frmOpt.setVisible(true);
        return frmOpt;

   }

   private static JPanel createButton() {
        JPanel panel = new JPanel();
        panel.setBackground(new Color(1.0f, 1.0f, 1.0f, 0.1f));
        JButton button = new JButton("Close");
        panel.add(button);
        return panel;
    }

Currently the view is looking like this:

As of Now button is displayed on the Top. What I want to do is to put the button in the bottom of the screen. I have tried some layout (BoxLayout and BorderLayout) but view was as per the expection. I can understand that it will be a small change but I am not having much exp in Swing Programming.

Can someone please suggest how can I achieve that.

Edit:

Tried suggested changes:

JScrollPane jScrollPane = new JScrollPane(jEditorPane);
panel.add(jScrollPane);
frmOpt.add(panel,BorderLayout.CENTER);
frmOpt.add(createButton(),BorderLayout.PAGE_END);

but it's not coming as expected. Button and html page in JscrollPane are displaying completely separated and Page is also not coming over complete screen.

Thanks,

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'How to show the Button in the bottom of the JScrollPane Inside a JFrame

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