code: protected void showErrorDialog(String message, String title) {
  		JOptionPane.showMessageDialog(this, message, title, JOptionPane.ERROR_MESSAGE);
  	}
docs: Convenience method that shows an error dialogue with the given message and title.
  <p>
  The {@code parent} of the error dialogue is this file chooser.
  
  @param message the error message.
  @param title the title of the dialogue.
  @since TODO add version