static JInternalFrame addInternalFrame(final JDesktopPane desktop, fS title, final int x, final int y, final int w, final int h) {
  ret swing(func -> JInternalFrame {
    JInternalFrame frame;
    desktop.add(setBounds(x, y, w, h, frame = jInternalFrame(title)));
    //frame.moveToFront();
    desktop.getDesktopManager().activateFrame(frame);
    ret frame;
  });
}