code: private String readFile(File file) {
      BufferedReader reader = null;
      try {
        reader = new BufferedReader(new FileReader(file));
        String line = null;
        StringBuilder sb = new StringBuilder();
        String separator = System.getProperty("line.separator");
        while ((line = reader.readLine()) != null) {
          sb.append(line).append(separator);
        }
  
        return sb.toString();
      } catch (FileNotFoundException e) {
        throw new RuntimeException(
          "We already made sure the extra args file exists",
          e
        );
      } catch (IOException e) {
        throw new RuntimeException(
          "Error while reading from extra args file",
          e
        );
      } finally {
        if (reader != null) {
          try {
            reader.close();
          } catch (IOException e) {
            SelendroidLogger.error("Failed to close reader for args file", e);
          }
        }
      }
    }
docs: There's no nio on Android and it's not worth importing Apache commons