public static ComponentUI createUI(JComponent b) 
{
        return new SynthRadioButtonMenuItemUI();
}

 protected String getPropertyPrefix() 
{
        return "RadioButtonMenuItem";
}

  void paintBackground(SynthContext context,
    Graphics g,
    JComponent c) 
{
        context.getPainter().paintRadioButtonMenuItemBackground(context, g, 0,
                             0, c.getWidth(), c.getHeight());
}

 public  void paintBorder(SynthContext context,
    Graphics g,
    int x,
    int y,
    int w,
    int h) 
{
        context.getPainter().paintRadioButtonMenuItemBorder(context, g, x,
                                                            y, w, h);
}

 public  void processMouseEvent(JMenuItem item,
    MouseEvent e,
    MenuElement[] path,
    MenuSelectionManager manager) 
{
        Point p = e.getPoint();
        if(p.x  >= 0 && p.x <  item.getWidth() &&
           p.y  >= 0 && p.y <  item.getHeight()) {
            if(e.getID() == MouseEvent.MOUSE_RELEASED) {
                manager.clearSelectedPath();
                item.doClick(0);
                item.setArmed(false);
            } else
                manager.setSelectedPath(path);
        } else if(item.getModel().isArmed()) {
            MenuElement newPath[] = new MenuElement[path.length-1];
            int i,c;
            for(i=0,c=path.length-1;i< c;i++)
                newPath[i] = path[i];
            manager.setSelectedPath(newPath);
        }
}