Duration and Period

gistfile1.txt

    /*
    P is the duration designator (historically called "period") placed at the start of the duration representation.
    Y is the year designator that follows the value for the number of years.
    M is the month designator that follows the value for the number of months.
    W is the week designator that follows the value for the number of weeks.
    D is the day designator that follows the value for the number of days.
    T is the time designator that precedes the time components of the representation.
    H is the hour designator that follows the value for the number of hours.
    M is the minute designator that follows the value for the number of minutes.
    S is the second designator that follows the value for the number of seconds.
    */

    //"timeLeft": "P2DT12H47M37S",
    public static Duration parseDuration(String duration) {
        PeriodFormatter parser = ISOPeriodFormat.standard();
        MutablePeriod period = new MutablePeriod();
        parser.parseInto(period, duration, 0);
        return period.toDurationFrom((new DateTime(0)));
    }

    public static void main(String... args) {
        Period period = parseDuration("PT21H52M6S").toPeriod();
        PeriodFormatter minutesAndSeconds = new PeriodFormatterBuilder()
                .appendHours()
                .appendSeparatorIfFieldsBefore(" Hours ")
                .appendMinutes()
                .appendSeparatorIfFieldsBefore(" Minutes ")
                .appendSeconds()
                .appendSeparatorIfFieldsBefore(" Seconds ")
                .toFormatter();
        String result = minutesAndSeconds.print(period);
        out.println(result);
    }