使用 { } 对大型代码块进行分段以提高代码可读性 - 良好做法？

我正在考虑使用匿名{}代码块来逻辑区分同一方法调用中的“代码块”的选项，这（理论上）应该提高代码的可读性。

我想知道以下2个代码段中的哪一个对您的眼睛更好？

另外，2个代码段是否编译为相同的字节码？换句话说，使用{}会以任何方式损害代码的性能吗？

选项 1：不带 { } 标识的代码块

 public static String serviceMatch(HttpServletRequest servletRequest, RequestTypeEnum requestTypeEnum, ...censorsed..., RequestStatistics requestStatistics) {
  Request request;

  // We get the parser that fits the ...censorsed..., effectively transforming the HTTPReqeuest to application local "Request*" object
  RequestParser parser = RequestParserFactory.getParser(...censorsed...);

  // Populate basic parameters, the "heavy" data will be lazy loaded
  request = parser.parse(servletRequest);

  // Instead of polluting the parsers let's put it here... (unless we identify meaningful justifications for the other alternative of changing RequestParser.parse() interface.
  request.requestType = requestTypeEnum;

  // Store the request statistics object on the request, so that we have access to it from all over the code
  request.requestStatistics = requestStatistics;



  // Update timestamp when request was parsed
  request.requestStatistics._1_end_parseRequest = System.currentTimeMillis();


  /*
   * ...censorsed...
   */
  MatchResult matchResult = Matcher.findMatch(...censorsed...);

  /*
   * ...censorsed...
   */
  String reply = ReplyFormatFactory.getFormatter(...censorsed...

  // Update timestamp when reply finished construction
  request.requestStatistics._6_end_formatReply = System.currentTimeMillis();

  return reply;
 }

选项 2：具有 { } 标识的代码块

 public static String serviceMatch(HttpServletRequest servletRequest, RequestTypeEnum requestTypeEnum, ...censorsed..., RequestStatistics requestStatistics) {
  Request request;

  /*
   * Request parsing block
   */
  {
   // We get the parser that fits the ...censorsed..., effectively transforming the HTTPReqeuest to application local "Request*" object
   RequestParser parser = RequestParserFactory.getParser(...censorsed...);

   // Populate basic parameters, the "heavy" data will be lazy loaded
   request = parser.parse(servletRequest);

   // Instead of polluting the parsers let's put it here... (unless we identify meaningful justifications for the other alternative of changing RequestParser.parse() interface.
   request.requestType = requestTypeEnum;

       // Store the request statistics object on the request, so that we have access to it from all over the code
   request.requestStatistics = requestStatistics;
  }



  // Update timestamp when request was parsed
  request.requestStatistics._1_end_parseRequest = System.currentTimeMillis();


  /*
   * ...censorsed...
   */
  MatchResult matchResult = Matcher.findMatch(...censorsed...);

  /*
   * ...censorsed...
   */
  String reply = ReplyFormatFactory.getFormatter(...censorsed...

  // Update timestamp when reply finished construction
  request.requestStatistics._6_end_formatReply = System.currentTimeMillis();

  return reply;
 }

感谢您的评论，马克西姆。