Setting the application focus to a java-program in Ubuntu/LTSP

We are using LTSP with Thin-Clients. We are using it, to run a Java-Swing-Application. The users should not be able to do anything else, so instead of a Gnome-Session we use a shell-script to start our application.

Nearly everything works perfect but one thing: When the Thin-Client starts, the application starts too but doesn't receive the focus. We have to click once with the mouse inside the app开发者_如何学运维lication, which is not that good, because the application is designed to be used without a mouse.

I didn't found anything useful, a toFront() on my Main Frame wasn't successful.

Has anyone any better suggestions??

You can use method java.awt.Window#setAlwaysOnTop(boolean) to grab the focus and after the first user interaction reset the alwayOnTop property.

You could try to call requestFocus on your JFrame as soon as it becomes visible:

JFrame frame = new JFrame();

frame.addComponentListener(new ComponentAdapter() {
        public void componentShown(ComponentEvent e) {
            ((JFrame) e.getSource()).requestFocus();
        }
    });

frame.setVisible(true);