title: Can't convert string to ZonedDateTime: DateTimeParseException
body: <p>I try to convert string from JSON to ZonedDateTime just like</p>
  
  <pre><code>static String getWatchTime(JSONObject aJson, JSONObject bJson) {
      long difference = 0 ;
      try {
          String aTime = aJson.getString("time_utc_8");
          String bTime = bJson.getString("time_utc_8");
  
          String pattern = "yyyy-MM-dd HH:mm:ss.SSSSSS";
          DateTimeFormatter Parser = DateTimeFormatter.ofPattern(pattern).ISO_DATE;
  
          System.out.println(aTime);
  
          ZonedDateTime a = ZonedDateTime.parse(aTime, Parser);
          ZonedDateTime b = ZonedDateTime.parse(bTime, Parser);
  
          ChronoUnit unit = null;
          difference = unit.between(a, b);
  
          System.out.println(difference);
  
      } catch (JSONException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      }
  
      String t = difference +"";
      return t;
  
  }
  </code></pre>
  
  <p>and always get the error</p>
  
  <pre><code>Exception in thread "main" java.time.format.DateTimeParseException: Text '2016-06-28 22:29:44.700228' could not be parsed: Unable to obtain OffsetDateTime from TemporalAccessor: {},ISO resolved to 2016-06-28T22:29:44.700228 of type java.time.format.Parsed
  at java.time.format.DateTimeFormatter.createError(Unknown Source)
  at java.time.format.DateTimeFormatter.parse(Unknown Source)
  at java.time.OffsetDateTime.parse(Unknown Source)
  at Q2.getWatchTime(Q2.java:321)
  at Q2.WatchTime(Q2.java:265)
  at Q2.main(Q2.java:31)
  </code></pre>
  
  <p>I want to get the difference between these two date.
  I've tried <code>SimpleDateFormat</code> but it will get the error result, for the mills.</p>