code: public static String getPath(String relativePath, String backupDirCanonicalPath) throws MalformedURLException
     {
        String path = "file:" + backupDirCanonicalPath + "/" + relativePath;
  
        URL urlPath = new URL(resolveFileURL(path));
  
        return urlPath.getFile();
     }
docs: Will be returned absolute path.
  
  @param relativePath
  String, relative path.
  @param backupDirCanonicalPath
  String, path to backup dir
  @return String
  Will be returned absolute path.
  @throws MalformedURLException