code: private void setMinFormatString()
      {
          int i = _tzFormatString.indexOf("ss.SSS");
          int l = 6;
          if (i>=0)
              _millis=true;
          else
          {
              i = _tzFormatString.indexOf("ss");
              l=2;
          }
          
          // Build a formatter that formats a second format string
          // Have to replace @ with ' later due to bug in SimpleDateFormat
          String ss1=_tzFormatString.substring(0,i);
          String ss2=_tzFormatString.substring(i+l);
          _minFormatString =ss1+(_millis?"'ss.SSS'":"'ss'")+ss2;
      }
docs: /* ------------------------------------------------------------