private static String obterCaracterTratado(char caracter) {
    String retorno = null;
    int posicao = pstrCaracteresValidosEntrada.indexOf(caracter);

    if (posicao >= 0 && caracter != '/') {
      retorno = String.valueOf(caracter);
    } else {
      retorno = StringUtil.converterEntreBases(String.valueOf((int) caracter), 10, 16);
      if (retorno.length() == 1) {
        retorno = "/0" + retorno;
      } else {
        retorno = "/" + retorno;
      }
    }

    return retorno;
  }
  private static String obterStringOriginal(String strStringTratada) {
    StringBuffer strNovaString = new StringBuffer();
    String strCaracterOriginal;
    int intPosicao;

    intPosicao = strStringTratada.indexOf("/");
    while (intPosicao >= 0) {
      strCaracterOriginal = strStringTratada.substring(intPosicao + 1, intPosicao + 3);

      // Tenta converter o código para o caracter original
      strCaracterOriginal = StringUtil.converterEntreBases(strCaracterOriginal, 16, 10);

      // Define as novas strings
      strNovaString.append(strStringTratada.substring(0, intPosicao));
      strNovaString.append((char) Integer.parseInt(strCaracterOriginal));
      strStringTratada = strStringTratada.substring(intPosicao + 3);

      intPosicao = strStringTratada.indexOf("/");
    }

    return strNovaString.toString() + strStringTratada;
  }