converting time stamp in SECONDS to a calendar date format.. problems
Hello. I'm trying to convert a long interger that represents the number of SECONDS passed since the 1970 date
the number was originally generated by php's mktime() function
one of the numbers I have for example is this : 1126933200
I haven't done the math but this is a date probably around september of 2005.. it's irrelevant anyhow.
I want to convert this to a date format I can use in java. I've tried to create a new date like so :
Date date = new Date(1126933200);
I've also tried it with the calendar method like so :
Calendar calendar = new GregorianCalendar();
calendar.setTimeInMillis(1126933200);
it was only then that I realized that both these methods require the number of MILLI seconds. So I tried doing a simple multiplication by 1000 on my original number and then I started getting a "integer number too large" error when trying to compile.
so i'm kind of at a loss here.. i figure I could make a function myself that would divide my number in days of 86400 seconds.. and then i'd have to keep in mind the bisectal (sp) and the months with more and less days etc.. but i'm sure there must be an easier way.
and i don't get why a method who's meant to receive a very long number is giving me an error when i try to give one to it.
your help is appreciated as always. thanks
[1379 byte] By [
vesper8a] at [2007-10-3 5:39:38]
Because you're trying to do this with an int and not a long.Use a long. If you're stuck with that post your formatted code and we'll see what we can do.
long d = 1126933200L;
Date date = new Date(d*1000);
System.out.println(date);
This gives
Sat Sep 17 06:00:00 BST 2005
Bloody hell! The longs have an 'L' suffix which is swallowed by the forum software!
By using double L the forum software displays just one.
Message was edited by:
sabre150
Message was edited by:
sabre150
thanks.. i guess my error was that i didn't know how to declare a long properly.. i was just doing it like :
long millis = 1126933200;
i figured out another way to make it work though, like this :
GregorianCalendar rightNow = new GregorianCalendar(1970,1,0);
rightNow.add(Calendar.SECOND, 1159156800 );
For a literal long you need the L at the end of the numberlong mylong = 123456789L;
> i figured out another way to make it work though,
> like this :
>
> GregorianCalendar rightNow = new
> GregorianCalendar(1970,1,0);
>rightNow.add(Calendar.SECOND, 1159156800 );
Quite a cludge! Keep on producing cludges like this and your work colleges will learn to hate you!
The question remains... is it more or less kludgy thenLLStupid Sun.
> > i figured out another way to make it work though,
> > like this :
> >
> > GregorianCalendar rightNow = new
> > GregorianCalendar(1970,1,0);
> >rightNow.add(Calendar.SECOND, 1159156800 );
>
> Quite a cludge! Keep on producing cludges like this
> and your work colleges will learn to hate you!
I disagree. It makes the intent of the code more obvious.
> Hello. I'm trying to convert a long interger that
> represents the number of SECONDS passed since the
> 1970 date
>
> the number was originally generated by php's mktime()
> function
>
> one of the numbers I have for example is this :
> 1126933200
>
> I haven't done the math but this is a date probably
> around september of 2005.. it's irrelevant anyhow.
>
> I want to convert this to a date format I can use in
> java. I've tried to create a new date like so :
>
> Date date = new Date(1126933200);
>
> I've also tried it with the calendar method like so
> :
>
> Calendar calendar = new GregorianCalendar();
> calendar.setTimeInMillis(1126933200);
>
> it was only then that I realized that both these
> methods require the number of MILLI seconds. So I
> tried doing a simple multiplication by 1000 on my
> original number and then I started getting a "integer
> number too large" error when trying to compile.
So you needed to add L to one of the numbers.
Note you also need to define what timezone that seconds number represents.
With Gregorian it is going to use the local timezone (the code here will anyways). The code using Date is using the UTC timezone.
How about import java.util.Date;
class dateConst {
public static void main(String[] argv) {
Date d = new Date(1126933200 * 1000);
System.out.println(d);
}
}
... or am I missing something here?
Keith.
> > ... or am I missing something here?Reply #2!
