public SwingUI() {
        Point center = GraphicsEnvironment.getLocalGraphicsEnvironment().getCenterPoint();
        this.setBounds(center.x - 650 / 2, center.y - 700 / 2, 650, 700);
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Exception e) {
        }

        initComponents();

        setIconImage(new javax.swing.ImageIcon(getClass().getResource("/img/logo.gif")).getImage());
        setVisible(true);

        if (Minesweeper.getInstance() != null) {
            if (Minesweeper.getInstance().getSetting().equals(Settings.BEGINNER)) {
                beginnerMenuItem.setSelected(true);
            } else if (Minesweeper.getInstance().getSetting().equals(Settings.INTERMEDIATE)) {
                intermediateMenuItem.setSelected(true);
            } else if (Minesweeper.getInstance().getSetting().equals(Settings.EXPERT)) {
                expertMenuItem.setSelected(true);
            }
        } else {
            Minesweeper.getInstance().setSetting(Settings.BEGINNER);
        }
    }