Convert number of seconds into HH:MM (without seconds) in Java

Question

I\'m aware that you can use DateUtils.formatElapsedTime(seconds) to convert a number of seconds into a String with the format HH:MM:SS

Answer 1

Based on the available information, you seem to be wanting to format a duration based value. Lucky for us, since Java 8, there is now a new java.time API which includes a Duration class.

Unfortunately, it doesn't (at least the last time checked) support a formatter for it.

However, you could easily roll your own...

protected static String format(Duration duration) {
    long hours = duration.toHours();
    long mins = duration.minusHours(hours).toMinutes();
    return String.format("%02d:%02d", hours, mins);
}

Which when used with something like...

System.out.println(format(Duration.ofSeconds(3665)));

prints out 01:01.

Now I know you'd "prefer" utility methods, but you're unlikely to find something that fits your "every" need and this at least gives you a starting point. Besides, you could always make a pull request ;)