code: public static String readFileFromClassPath(String _fileName) {
          StringBuilder sb = new StringBuilder();
          for (String string : readFileFromClassPathAsList(_fileName)) {
              sb.append(string).append("\n");
          }
          return sb.length() == 0 ? null : sb.toString();
      }
docs: Reads a file from classpath to String.
  
  @param _fileName
  @return file contents as String or null