Calculate elapse time in java

Asked Nov 19 '14 at 00:43

Active Nov 19 '14 at 00:54

Viewed 80 times

I have timestamps like below and need to calculate elapse time.

t1: 2014-11-07 11:22:39.854296-08
t2: 2014-11-07 11:22:52.748804-08

I use the following code but the result is not correct:

        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss.SSS"); 

        String time1 = "2014-11-07 11:22:39.854296-08";
        java.util.Date parsedDate1 = dateFormat.parse(time1);

        String time2 = "2014-11-07 11:22:52.748804-08";
        java.util.Date parsedDate2 = dateFormat.parse(time2);

        int elapse = (int)(parsedDate2.getTime() - parsedDate1.getTime());

If I use format: ("yyyy-MM-dd hh:mm:ss"), the result is correct.

edited Nov 19 '14 at 00:54

asked Nov 19 '14 at 00:43

John

Calculating the difference between two times/dates is NEVER done by subtracting them, there are just two many factors involved. If you're using Java 8, makes use of the new time API or use Joda Time – MadProgrammer Nov 19 '14 at 00:45
also, would the `elapse` be int or `double` ? methinks, double – Caffeinated Nov 19 '14 at 00:49
1

For [example](http://stackoverflow.com/questions/12851934/how-to-find-difference-between-two-joda-time-datetimes-in-minutes/12852021#12852021) – MadProgrammer Nov 19 '14 at 00:49
1

@Coffee It should be `long`... – MadProgrammer Nov 19 '14 at 00:49
Or [perhaps this example](http://stackoverflow.com/questions/13328912/java-getting-time-interval/13329218#13329218) – MadProgrammer Nov 19 '14 at 00:51
@John how did you got these timestamps.?? – Ankur Singhal Nov 19 '14 at 01:09
From log of database. – John Nov 19 '14 at 01:17

Calculate elapse time in java

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