<code lang="java">
    public static void main(String[] args) throws Exception {
        System.out.println("Probando Full Screen...");
        JFrame fr = new JFrame();
        fr.setTitle("Test Title");
        fr.getContentPane().add(new JLabel("Test content"));
        fr.setResizable(false);
        if (!fr.isDisplayable()){
            fr.setUndecorated(true);            
        }
        GraphicsDevice gd = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();
        gd.setFullScreenWindow(fr);
        fr.setVisible(true);
        Thread.sleep(5000);
        System.exit(0);
    }
</code>