comparing dates in Java

Evil Phil

Folks,

I want to compare 2 dates, in java, and get the number of days in between them. I've never worked with the calendar class and am kinda stuck. Any advice on where I should start?

Enygma

Not sure about the Calendar class for this but you could just use the Date class and call getTime() for each one, then do the math yourself.

yossarin

yeah - i was looking at the calender class + its not as straightforward as i thought:

a quick
Calender ans = new Calender();
ans.setTimeInMillis(Date1.getTime()-Date2.getTime());

will give you the long between those dates as a calender instance

int year = ans.get(Calender.YEAR);
int dayOfYear = ans.get(Calender.DAY_OF_YEAR);

this would work for dates in the same year, but then you'd have to mess where the dates were in different years (+ leap years )

also don't forget to check for AD or BC

thats a bit complicated though ? theres probably a simpler way
might be a start...
yoss

Evil Phil

Ok what I did was use Dates. I set the Date objects with the dates in question, did a getTime() on both of them. Subtract one from the other then figure out how many days are in the difference.

A lot simplier than the calander class.