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Editorial Team
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Asked: 2026-05-20T11:00:09+00:00

I am calculating the difference between two sql dates, TripStartDate and TripEndDate . If

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I am calculating the difference between two sql dates, TripStartDate and TripEndDate.
If TripStartDate= 2011-03-04 09:35:00 and TripEndDate = 2011-03-04 10:35:00 then I should get the number of day is 1 (because trip happened on that day).

Like this:

If TripStartDate = 2011-03-04 09:35:00 and TripEndDate = 2011-03-05 09:35:00 then method should return 2 days (because trip happened on both days).

If TripStartDate = 2011-03-04 09:35:00 and TripEndDate = 2011-04-04 09:35:00 then method should return 32 days. (because 28 days in march and 4 days in April).

Calculation should be based on only dates and month of year (not taking time in consideration). Please help me . Thanks in advance…

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1 Answer

  1. Editorial Team

    In Java I guess you would drop the time and calculate the day difference

    Calendar cal1 = Calendar.getInstance();
Calendar cal2 = Calendar.getInstance();
cal1.set(2011, 03, 04);
cal2.set(2011, 04, 04);
long milis1 = cal1.getTimeInMillis();
long milis2 = cal2.getTimeInMillis();
long diff = milis2 - milis1;
long days = diff / (24 * 60 * 60 * 1000);

    EDIT Quite surprisingly for me, that ^ code really doesn’t work always… apparently there are some ‘leap seconds’ that mess up the maths. There are quite enough links already proposed to you in comments. I would go with joda time library.

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