java 9 AKST timezone parsing

[Naoto Sato]

Yes. Please go ahead and file a bug report. Thanks.

Naoto

On 10/11/17 5:04 PM, Clément Guillaume wrote:
> Hi,
> 
> I verified that using java.locale.providers=COMPAT with java 9 makes the 
> AKST to be parsed as America/Juneau
> 
> Is http://bugreport.java.com/ the correct way to file a jira?
> 
> Le mer. 11 oct. 2017 à 10:50, Naoto Sato <naoto.sato at oracle.com 
> <mailto:naoto.sato at oracle.com>> a écrit :
> 
>     (replying to appropriate aliases, instead of generic jdk9-dev alias)
> 
>     Hi Clément,
> 
>     The locale data, where those time zone names are derived from, have been
>     switched to use Unicode Consortium's CLDR, instead of the ones that are
>     previously used prior to JDK9. So there will be some differences you may
>     encounter. However it seems not right to parse "AKST" to SystemV time
>     zone. I'd appreciate it if you file a JIRA issue for this.
> 
>     In the mean time, you can revert to the JDK8 behavior by setting the
>     system property "-Djava.locale.providers=COMPAT" to the command line.
> 
>     HTH,
>     Naoto
> 
>     On 10/10/17 7:37 PM, Clément Guillaume wrote:
>      > Hello,
>      >
>      > When parsing a date time string that contains a time zone like
>     AKST, AKDT,
>      > HST or AST with a DateTimeFormatter built from a pattern
>     containing 'z',
>      > java 9 returns the SystemV variant of those timezone, which then
>     behave
>      > differently as the "modern" ones. Looks like it's also an issue
>     with long
>      > time zone ("Alaska Standard Time")
>      >
>      >  From my digging I noticed that the PrefixTree generated
>      > by ZoneTextPrinterParser.getTree is different in java 8 and java
>     9, and
>      > this may be caused by a different order in the content returned
>      > by TimeZoneNameUtility.getZoneStrings(Locale.getDefault())
>      >
>      > Is this an expected behavior of java 9? (other american time
>     zones are
>      > parsed to the modern version: PST -> America/Los_Angeles)
>      >
>      > I tested it with java 9 build 9+181 and java 8 build
>     1.8.0_131-b11 (both
>      > linux 64 with en_US as local) on this code:
>      >
>      > import java.time.ZoneOffset;
>      > import java.time.format.DateTimeFormatter;
>      > import java.time.temporal.TemporalAccessor;
>      >
>      > public class Main{
>      >
>      > public static void main(String[] args){
>      > DateTimeFormatter timezoneFormatter =
>     DateTimeFormatter.ofPattern("z");
>      > TemporalAccessor temporalAccessor = timezoneFormatter.parse("AKST");
>      > System.out.println(temporalAccessor);
>      > temporalAccessor = timezoneFormatter.parse("AKDT");
>      > System.out.println(temporalAccessor);
>      > temporalAccessor = timezoneFormatter.parse("HST");
>      > System.out.println(temporalAccessor);
>      > temporalAccessor = timezoneFormatter.parse("AST");
>      > System.out.println(temporalAccessor);
>      >
>      > DateTimeFormatter isoFormatter =
>      >
>     DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mmX").withZone(ZoneOffset.UTC);
>      > temporalAccessor =
>      >
>     DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSz").parse("2017-09-13T06:30:33.123AKST");
>      > System.out.println(temporalAccessor);
>      > System.out.println(isoFormatter.format(temporalAccessor));
>      > temporalAccessor =
>      >
>     DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSVV").parse("2017-09-13T06:30:33.123America/Anchorage");
>      > System.out.println(temporalAccessor);
>      > System.out.println(isoFormatter.format(temporalAccessor));
>      > }
>      >
>      > }
>      >
>