public static String stringForTime(final long millis) {        final int totalSeconds = (int) millis / 1000;        final int seconds = totalSeconds % 60;        final int minutes = (totalSeconds / 60) % 60;        final int hours = totalSeconds / 3600;        if (hours > 0) {            return String.format("%d:%02d:%02d", hours, minutes, seconds);        } else {            return String.format("%02d:%02d", minutes, seconds);        }    }