JMenu to the top of the screen

My code looks like this, as it says in every example I've read but it doesn't work to no avail. Any suggestions?

MenuBar(){

vers = System.getProperty("os.name").toLowerCase();

if (vers.indexOf("mac") != -1)

{

//System.setProperty("apple.laf.useScreenMenuBar", "true");

System.setProperty ("com.apple.macos.useScreenMenuBar","true");

macFrame=new JFrame();

menu=new JMenuBar();

makeFileMenu();

makeEditMenu();

makeRecentMenu();

menu.add(fileMenu);

menu.add(editMenu);

menu.add(recentMenu);

macFrame.setJMenuBar(menu);

macFrame.setVisible(true);

}

blackmagea at 2007-7-12 18:50:04 >