Get LocalTime from difference between two LocalTime's

Question

I'm having issues finding an elegant way to subtract one LocalTime from another, but not by some amount of seconds, or minutes, but just this:

LocalTime difference = now - before;

Obviously this won't work, so in reality, what I'm after, is something that will take in two LocalTime's, and give me one back, so I can do the following:

00:01:42:519
00:02:13:217

00:00:30:698

I have tried the following:

long seconds = before.until(now, ChronoUnit.SECONDS);

But obviously that's only going to get me the seconds, ok, so I changed it to:

long millis = before.until(now, ChronoUnit.MILLIS);
long seconds = before.until(now, ChronoUnit.SECONDS);
long minutes = before.until(now, ChronoUnit.MINUTES);
long hours = before.until(now, ChronoUnit.HOURS);

But then I realised its just counting the entire time change in the specified unit, instead of just that units "contribution" to the change, if you understand what I mean.

PS: I've scanned SO for a few questions and they seem to be the same thing, only giving the entire difference back in a singular unit. If this is a duplicate, please point me in the right direction!

Any ideas?

Answer 1

This should do it:

LocalTime diff= t2.minusNanos(t1.toNanoOfDay());

https://ideone.com/3JB3U5

Answer 2

Reading the JavaDoc of LocalTime#until(), I found this solution:

long differenceMillis = MILLIS.between(before, now);