Tim Fox a �crit :
Hello !
Thank you everyone, now it works nicely !!! Some of you gave me the solution
and it works and others gave me pointers for my next 'begginers questions' and
both were very useful !
Just look at http://www.horus.ch/servlets/GenTwo :-))
Thanks a lot :-))
Denis
> The result of subtracting one date from another is not a date - in fact it's
> pretty meaningless. This is not specific to java.
>
> It depends what you want to get out - do you want the number of seconds between
> the dates, milliseconds, days, hours, months etc?
>
> For your problem (inactivity > 1 hour) something like the following will do:
>
> if ( date1.getTime() - date2.getTime() > 1000 * 60 * 60 )
> {
> //do something
> }
>
> You can get the same effect by using the Calendar class - this is generally
> better practice since it does a lot of stuff to do with locales, and a lot of
> the date stuff is now deprecated.
>
> Denis Bucher wrote:
>
> > Hello !
> >
> > My servlet opens a database connexion when started (in init()) only and I
> > want him to close and reopen the connexion if inactivity is more than one
> > hour. But HOW TO GET THE DIFFERENCE BETWEEN TWO DATES ???
> >
> > java.util.Date datenow = new java.util.Date();
> > out.println("Date now : " + datenow.toString());
> > out.println("Last dbase access : " + datedb.toString());
> > datedb = new java.util.Date();
> >
> > And then ?????
> >
> > new date = datedb - datenow ????
> >
> > And why do I have to say "java.util.Date" and not simply "Date" ???
> >
> > Denis
> >
> > --
> >
> > Denis Bucher, / [EMAIL PROTECTED] T�l. +41-22-8000625 \ Internet
> > Horus Networks / horus-networks.com Fax: +41-22-8000622 \ Services
> > / http://www.horus.ch US Fax: (508) 437-1261 \ Provider
> >
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> --
> Tim Fox (��o)
>
> Hyperlink plc
> http://hyperlink.com
>
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> phone: +44 (0) 207 240 8121
>
> ___________________________________________________________________________
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--
Denis Bucher, / [EMAIL PROTECTED] T�l. +41-22-8000625 \ Internet
Horus Networks / horus-networks.com Fax: +41-22-8000622 \ Services
/ http://www.horus.ch US Fax: (508) 437-1261 \ Provider
___________________________________________________________________________
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff SERVLET-INTEREST".
Archives: http://archives.java.sun.com/archives/servlet-interest.html
Resources: http://java.sun.com/products/servlet/external-resources.html
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