java 9 AKST timezone parsing

[Naoto Sato]

https://bugs.openjdk.java.net/browse/JDK-8189784

Naoto

On 10/19/17 11:57 AM, Clément Guillaume wrote:
> I posted it few days ago (and got the id 9051213). I think it's still 
> being reviewed.
> 
> 2017-10-11 17:11 GMT-07:00 Naoto Sato <naoto.sato at oracle.com 
> <mailto:naoto.sato at oracle.com>>:
> 
>     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> <mailto: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));
>               > }
>               >
>               > }
>               >
> 
>