public void addBingoBall(String tempNum)
    {
        ImageIcon image = new ImageIcon("blue_light.png");
        JLabel label = new JLabel(image, SwingConstants.CENTER);
        label.setPreferredSize(new Dimension(83,83));
        label.setLayout(new FlowLayout(FlowLayout.CENTER));
        JLabel text = new JLabel(tempNum);
        text.setFont(new Font("Sans", Font.BOLD, 30));
        label.add(text);
        add(label);

    }