Hi There,
Based on our previous discussion, I am trying to get Joda to parse a time
that lies in the hour of 01:00 to 02:00 on the 28th October 2007 into a
pre-changover time. The hours go BACK at 02:00 AM so I want to parse a time
representing the pre changover time.
DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyy-MM-dd
HH:mm:ssZZZZZZZZ");
DateTime preDSTTime = formatter.parseDateTime("2007-10-28
01:20:30+01:00/Z");
The above code does not work, it throws an exception.
Is there a way I can do this? I tried parseInto also and it does not seem to
work, it parses it into GMT and does not throw an exception.
many thanks,
- Paul.
On 10/25/07, Stephen Colebourne <[EMAIL PROTECTED]> wrote:
>
> Parsing strings ignores the timezone string (IST/GMT).
> However, it can parse the +01:00/Z.
> I'm not sure what parsing will pick in this exact scenario, but you
> could try it with +01:00/Z.
>
> Stephen
>
>
> Paul Nolan wrote:
> > Hi Rodrigo,
> >
> > Thanks for the reply.
> >
> > I don't think there is anything wrong with it. I am just trying to see
> > if there is a way I can tell it to assume IST and not GMT since there
> > are 2 such times due to DST i.e .
> >
> > 1. 2007-10-28 01:20:00 IST and
> > 2. 2007-10-28 01:20:00 GMT.
> >
> > Is there a way I can do this using the DateTimeFormatter? e.g. is there
> > a way to do the following:
> >
> > DateTimeFormatter.parse("2007-10-28 01:20:00 IST") or perhaps
> > DateTimeFormatter.parse("2007-10-28 01:20:00 UTC+1")
> >
> > or something like that?
> >
> > thanks,
> >
> > - Paul.
> >
> > On 10/24/07, *Rodrigo de Avila * <[EMAIL PROTECTED]
> > <mailto:[EMAIL PROTECTED]>> wrote:
> >
> > Hi Paul,
> >
> > Sorry, but, nothing wrong to me here:
> >
> > DateTime now = new DateTime(2007, 10, 28, 01, 20, 0, 0,
> > DateTimeZone.forID("Europe/Dublin") );
> >
> > out.println(now + " " + now.getZone()); //2007-10-28T01:20: 00.000Z
> > Europe/Dublin
> >
> > now = now.plusHours(1);
> >
> > out.println(now + " " + now.getZone()); //2007-10-28T02:20:00.000Z
> > Europe/Dublin
> >
> > 1) What's the VM default timezone? GMT? If yes, you can change it to
> > Europe/Dublin using System.setProperty?
> >
> > 2) Do you update the TZ information in Joda-time jar file, to
> > recognize the summer time in Europe/Dublin? (I don't know if your ST
> > is fixed or not) Instructions you find in
> > http://joda-time.sourceforge.net/tz_update.html
> >
> > 3) Do you see the problem with now.plusHours(1) when you insert this
> > time in an database? If yes, remember: the DateTime class is
> > immutable; when you call new DateTime with parameters, only the
> fiels
> > are updated (year, month, day, hour, minute, second). The
> > getTimeInMillis is not updated. Use MutableDateTime instead.
> >
> >
> > 2007/10/24, Paul Nolan < [EMAIL PROTECTED]
> > <mailto:[EMAIL PROTECTED]>>:
> > > Hi there,
> > >
> > > I live in Ireland. It is currently IST - Irish Summer Time.
> > >
> > > On the 28th October 2007 at 02:00 AM the clocks will go backwards
> > one hour
> > > to 01:00 AM GMT.
> > >
> > > So, in effect, there are two 01:01 AM's, two 01:02 AM's etc. One
> > in IST and
> > > one in GMT.
> > >
> > > My question is this:
> > >
> > > If I execute the code:
> > >
> > > DateTime now = new DateTime(2007, 10, 28, 01, 20, 0, 0,
> > > DateTimeZone.forID("Europe/Dublin") );
> > >
> > > It defaults to 01:20 GMT. So, naturally if I execute:
> > >
> > > now = now.plusHours(1);
> > >
> > > The time is now 02:20 GMT.
> > >
> > > How do I tell DateTime to assume IST? I tried with the time zone
> > ID "IST"
> > > but it is not recognised...I know these have been deprecated.
> > >
> > > In other words how do I do something like:
> > >
> > > DateTime now = new DateTime(2007, 10, 28, 01, 20, 0, 0,
> > > DateTimeZone.forID("IST") );
> > >
> > > To get: 01:20 IST
> > >
> > > now = now.plusHours(1);
> > >
> > > I get 01:20 GMT?
> > >
> > > thanks,
> > >
> > > - Paul.
> > >
> >
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> > >
> >
> >
> > --
> > Rodrigo de Avila
> > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
> >
> > http://www.avila.eti.br
> >
> >
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