public void init()
    {
        Container pane = getContentPane();

        JPanel p = new JPanel(new BorderLayout());

        JPanel topPan = new JPanel();
        JPanel botPan = new JPanel(new FlowLayout());
        JButton sub = new JButton();
        JTextField number = new JTextField();
        JButton add = new JButton();

        botPan.add(sub);
        botPan.add(number);
        botPan.add(add);
        p.add(topPan, BorderLayout.CENTER);
        p.add(botPan, BorderLayout.SOUTH);

        pane.add(p);

    }