How to calculate a time diffrence

Question

I'm trying to calculate a simple time diffrence.
It's a simple math calculation, but i don't know how to do it.

What im trying to do is for example to calculate 23:23:20 - 23:23:10 = 00:00:10.
And I want to save the result.

My question is: how do I write the code?

I tried this, not sure how right it is

      Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC+2:00"));                               Date currentLocalTime = cal.getTime();
            DateFormat date = new SimpleDateFormat("HH:mm a");
            date.setTimeZone(TimeZone.getTimeZone("UTC+2:00"));
            String localTime = date.format(currentLocalTime);

Have a look at [this](http://stackoverflow.com/a/15360419/4038549) and [this](http://stackoverflow.com/a/18908807/4038549). — Amitai Fensterheim, May 26 '16 at 20:53

score 0 · Answer 1 · answered May 26 '16 at 20:59

Something like this:

Calendar date1 = Calendar.getInstance(TimeZone.getTimeZone("UTC+2:00"));
Calendar date2 = Calendar.getInstance(TimeZone.getTimeZone("UTC+3:00"));

Date date = new Date(date2.getTimeInMillis() - date1.getTimeInMillis());
SimpleDateFormat dateFormatter = new SimpleDateFormat("HH:mm:ss");

String formattedResult = dateFormatter.format(date);

How to calculate a time diffrence

1 Answers1