DESKTOP_PANE.addComponentListener(new ComponentAdapter() {
public void componentResized(final ComponentEvent e) {
Dimension size = e.getComponent().getSize();
label.setSize(e.getComponent().getSize());
label.setText("<html><img width=" + size.width + " height=" + size.height + " src='" + this.getClass().getResource("/backImg.jpg") + "'></html>"); } });