Daylight Saving Time changes

Classic Servoy
1

Not sure in what forum to put this but here goes.

A couple of countries have changed their Daylight Savings Time (DST) this year.
Apparently Windows is already updated for this. Apple released yesterday an update for this as well (OS and Java).
Now I understand Java manages it’s own time-zones.

My question is how Servoy handles time-zones. Does it let Java handle this or does it call the underlying OS ?
Should we upgrade Java on Windows/Linux to some version to counter this issue? (Apple already has this covered with their update)

Depending on the application the effects of not applying DST correctly might range from small to disastrous so can one of the Servoyans comment on this?

2

We are not doing anything with timezones, we can retreive info from the Java runtime which in turn (as far as we know) retrieves it from the OS.

3

which in turn (as far as we know) retrieves it from the OS

While ‘playing’ with timezones for the calendar bean I found that changing settings in the os also changes the ‘settings’ in Java so I think I can confirm the thoughts of Jan…

4

http://java.sun.com/developer/technicalArticles/Intl/USDST/

http://java.sun.com/developer/technicalArticles/Intl/USDST_Faq.html

It seems like you have to be at a certain Java version JRE or above in order to be not affected by the DST change that’s happening in United States and Canada. I’m on version 1.4.2_05-b4 and will probably have to upgrade.

5

Hmm, should have thought of that. That’s (one of the) reason(s) Apple sent out a Java update the other day…

6

Hi Sammy,

Thanks for the links.
I was suspecting that we had to upgrade the JVM. Of course this is only really needed for people who deal with the affected timezones/countries.

sammyzheng:
I’m on version 1.4.2_05-b4 and will probably have to upgrade.

From what I read in FAQ link you posted is that you can stay within 1.4.2 branch. So in that sense it’s more of an update than an upgrade.

7

ROCLASI:
Hi Sammy,

Thanks for the links.
I was suspecting that we had to upgrade the JVM. Of course this is only really needed for people who deal with the affected timezones/countries.

sammyzheng:
I’m on version 1.4.2_05-b4 and will probably have to upgrade.

From what I read in FAQ link you posted is that you can stay within 1.4.2 branch. So in that sense it’s more of an update than an upgrade.

The strange thing is that I changed the time on my test server an hour ahead and ran some data collection using “application.getServertimestamp” command and the clients pulled up the updated system time just fine. perhaps nothing to worry about.

thx.

8

java must be updated as I read from the following article:

http://en.wikipedia.org/wiki/Daylight_s … a_platform