public static void showOnScreen( int screen, JFrame frame ) {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] gs = ge.getScreenDevices();
if(screen > -1 && screen < gs.length) {
gs[screen].setFullScreenWindow(frame);
}else if(gs.length > 0) {
gs[0].setFullScreenWindow(frame);
}else {
throw new RuntimeException("No Screens Found");
}
}