code: public Integer readInteger() throws IOException {
          String temp = this.readField(false /* isQuotedString */);
  
          if (Utility.isNullOrEmpty(temp)) {
              return null;
          }
          else {
              return Integer.parseInt(temp);
          }
      }
docs: Read an Integer from the stream.
  
  @return
  the Integer read.
  @throws IOException