static <A extends Component> A jMinWidth(final int w, final A c) {
  if (c == null) null;
  ret swing(func -> A {
    Dimension size = c.getMinimumSize();
    c.setMinimumSize(new Dimension(/*max(w, size.width) ??? */w, size.height));
    ret jPreferWidth(w, c);
  });
}