code: public static File chooseImage(Component parent, boolean openOrSave, String fileName) {
  		final int result;
  		if (fileName != null) {
  			IMAGE_FILE_CHOOSER.setSelectedFile(new File(fileName));
  		}
  		if (openOrSave) {
  			result = IMAGE_FILE_CHOOSER.showOpenDialog(parent);
  		} else {
  			result = IMAGE_FILE_CHOOSER.showSaveDialog(parent);
  		}
  		if (result == JFileChooser.APPROVE_OPTION) {
  			File file = IMAGE_FILE_CHOOSER.getSelectedFile();
  			file = IMAGE_FILE_CHOOSER.checkFile(file);
  			return file;
  		}
  		return null;
  	}
docs: Ouvre la boîte de dialogue de choix de fichier image.
  <br>Retourne le fichier choisi, ou null si annulé.
  @param parent Component
  @param openOrSave boolean
  @param fileName String
  @return File