RE: Date calculations

["Joel R. Cochran" <jrc@xxxxxxxxxxxxx>]

That's why there are named constants... try this instead...

  Calendar c = new GregorianCalendar( 2002 , Calendar.AUGUST , 31 );
  c.add( Calendar.DATE , 1 );

And it isn't idiotic (although it can be annoying) when you consider that
all arrays, ArrayLists, Vectors, HashMaps, and other collections begin at
position 0, a fairly standard practice in languages other than RPG.  After
all, a year is an Array of months, a month is an Array of days, a day is an
array of... well you get the idea.

Joel R. Cochran
Director of Internet Services
VamaNet.com
(800)480-8810
mailto:webmaster@vamanet.com


> -----Original Message-----
> From: Clapham, Paul [mailto:pclapham@core-mark.com]
> Sent: Thursday, July 18, 2002 1:30 PM
> To: java400-l@midrange.com
> Subject: RE: Date calculations
>
>
> You just got zapped by one of the more idiotic features of Java.  In
> Calendar, months are numbered starting at zero, so "08" represents
> September.  Your original value was "September 31", which is
> normalized to
> October 1, and the rest becomes obvious once you know that.
>
> PC2
>
> -----Original Message-----
> From: Robert Upshall [mailto:rupshall@psasoft.com]
> Sent: July 18, 2002 10:20
> To: java400-l@midrange.com
> Subject: Re: Date calculations
>
>
> Hmmm .... why does
>
>             Calendar c = new GregorianCalendar(2002, 08, 31);
>             c.add(Calendar.DATE, 1);
>
> give me
>
>             the calendar c how has a date of 2002/10/02
>
> Am I doing this wrong?  I want something smart enough to consider the
> current month/day.
>
> Robert
>
>
> ----- Original Message -----
> From: "Bruce Jin" <brucej@MRC-PRODUCTIVITY.COM>
> To: <java400-l@midrange.com>
> Sent: Thursday, July 18, 2002 11:23 AM
> Subject: Re: Date calculations
>
>
> > Class Calendar and its subclass GregorianCalendar are very useful.
> >
> > ----- Original Message -----
> >
> > From: "Robert Upshall" <rupshall@psasoft.com>
> > To: <java400-l@midrange.com>
> > Sent: Thursday, July 18, 2002 6:27 AM
> > Subject: Date calculations
> >
> >
> > > Does java have any date classes that will allow me to do date
> calculation
> > > like the date type in RPG?
> > >   ie. newDate = date.addDay(1) ;
> > >
> > > Robert
> > >
> > >
> > >
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