Java: Full Screen Mode

//Screen Class
import java.awt.*;
import javax.swing.JFrame;

public class Screen {
    private GraphicsDevice vc;

    public Screen(){
        GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
        vc = env.getDefaultScreenDevice();
    }
    public void setFullScreen(DisplayMode dm, JFrame window){
        window.setUndecorated(true);
        window.setResizable(false);
        vc.setFullScreenWindow(window);

        if(dm != null && vc.isDisplayChangeSupported()){
            try{
                vc.setDisplayMode(dm);
            }catch(Exception ex){

            }
        }
    }

    public Window getFullScreenWindow(){
        return vc.getFullScreenWindow();
    }
    public void restoreScreen(){
        Window w = vc.getFullScreenWindow();
        if(w != null){
            w.dispose();
        }
        vc.setFullScreenWindow(null);
    }
}

//Main Class
import java.awt.*;
import javax.swing.JFrame;

public class Java extends JFrame {

    public static void main(String args[]){
        DisplayMode dm = new DisplayMode(800,600,16,DisplayMode.REFRESH_RATE_UNKNOWN);
        Java j = new Java();
        j.run(dm);
    }
    public void run(DisplayMode dm){
        setBackground(Color.black);
        setForeground(Color.white);
        setFont(new Font("Arial", Font.PLAIN, 24));

        Screen s = new Screen();
        try{
            s.setFullScreen(dm, this);
            try{
                Thread.sleep(5000);
            }catch(Exception ex){}
        }finally{
            s.restoreScreen();
        }
    }

    public void paint(Graphics g){
        g.drawString("This is gonna be awesome!", 200, 200);
    }
}