import javax.swing.*; import java.awt.*; import java.awt.event.*; public class FullScreenTest1 { GraphicsDevice device; public FullScreenTest1(){ GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); device = ge.getDefaultScreenDevice(); GraphicsConfiguration gc = device.getDefaultConfiguration(); try{ JFrame frame = new JFrame(gc); frame.setUndecorated(true); JButton button = new JButton("OK"); button.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ device.setFullScreenWindow(null); System.exit(0); } }); frame.getContentPane().add(button); device.setFullScreenWindow(frame); frame.setVisible(true); }catch(Exception ex){ device.setFullScreenWindow(null); System.exit(0); } } public static void main(String[] args){ FullScreenTest1 test = new FullScreenTest1(); } }