code: public final String loadString(final String pFileName)
          throws IOException {
      URL urlFile = SrvLedger.class
        .getResource(pFileName);
      if (urlFile != null) {
        InputStream inputStream = null;
        try {
          inputStream = SrvLedger.class.getResourceAsStream(pFileName);
          byte[] bArray = new byte[inputStream.available()];
          inputStream.read(bArray, 0, inputStream.available());
          return new String(bArray, "UTF-8");
        } finally {
          if (inputStream != null) {
            inputStream.close();
          }
        }
      }
      return null;
    }
docs: <p>Load string file (usually SQL query).</p>
  @param pFileName file name
  @return String usually SQL query
  @throws IOException - IO exception