How do you find the difference in no. of days between 2 dates?
How do you find the difference in no. of days between 2 dates ?
There are 2 way to solve this: using java.util.GregorianCalendar or java.util.Date (like jesper1 suggested), depending what kind of solution You need:
GregorianCalendar gc1 = new GregorianCalendar(2001, 01, 01, 23, 00, 00);
GregorianCalendar gc2 = new GregorianCalendar(2001, 01, 03, 10, 00, 00);
// 1st way using GregorianCalendar
int diff1 = gc1.get(GregorianCalendar.DATE) - gc2.get(GregorianCalendar.DATE);
System.out.println("Differnce: " + diff1);
// 2nd way using Date
int diff2 = (int)(gc1.getTime().getTime() - gc2.getTime().getTime()) / (24 * 60 * 60 * 1000);
System.out.println("Differnce: " + diff2);Note: There are 2 days between the given dates, but exactly 1 day and 11 hours.
The first solution returns "-2", the second returns "-1".
(... and a 4th posting also won't help ...)
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Finding the difference in no. of days between 2 dates
Finding the difference in no. of days between 2 dates
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