// update the modified time of the given file, or create it public static void touch(java.io.File file) throws ServiceException { if (file.exists()) { file.setLastModified((new java.util.Date()).getTime()); } else { create(file); } }
// returns whether the given file exists public static boolean exists(java.io.File file) throws ServiceException { return file == null ? false : file.exists() && file.isFile(); }