How to format an ISO-8601 string in Java?

Question

How do I format an ISO-8601 string 2020-02-10T22:55:13-08:00 into a custom format like 1:30pm? I kept getting unparseable date exception. My code snippet is below:

    String string = "2020-02-10T22:55:13-08:00";
    SimpleDateFormat sdfSource = new SimpleDateFormat("YYYY-MM-DD'T'HH:mm:ss'Z'", Locale.getDefault());
    SimpleDateFormat sdfTarget = new SimpleDateFormat("h:mma", Locale.getDefault());
    try {
        Date date = sdfSource.parse(string);
        String createdAt = sdfTarget.format(date);
        System.out.println(createdAt);
    } catch (ParseException e) {
      e.printStackTrace();
    }

Answer 1

    private String  getZonedDateTime(String startTime,String inExpectedTimeZone){
        return ZonedDateTime
                .parse(startTime, DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ssXXX"))
                .withZoneSameInstant(ZoneId.of(inExpectedTimeZone)).format(DateTimeFormatter.ofPattern("hh:mm a"));
    }

In the above method just pass the zulu string and expected Time in which you want the value it will be parsed using java 8 ZonedDateTime and DateTimeFormatter.