code: private void loadBackground() {
  		JFileChooser chooser = new JFileChooser(".");
  		chooser.setDialogTitle("Open");
  		int resp = chooser.showOpenDialog(this);
  		if (resp == JFileChooser.APPROVE_OPTION) {
  			game.setBackgroundImage(chooser.getSelectedFile());
  		}
  	}
docs: Load a background image to display behind the particle system