timezone incorrect about daylight saving time

[Fredrik Wendt]

Since one or two days back, Java doesn't recognize that I'm in a timezone with daylight saving time.

me@ubuntu:~$ mkdir /tmp/bug/
me@ubuntu:~$ cd /tmp/bug/
me@ubuntu:/tmp/bug$ cat >> Java.java
import java.util.*;

public class Java {
        public static void main(String... args) {
                System.out.println(new Date());
                System.out.println(TimeZone.getDefault());
        }
}
me@ubuntu:/tmp/bug$ javac Java.java

me@ubuntu:/tmp/bug$ LC_ALL=C date -u
Fri Sep 14 10:24:30 UTC 2012

me@ubuntu:/tmp/bug$ LC_ALL=C date -R
Fri, 14 Sep 2012 12:24:32 +0200

me@ubuntu:/tmp/bug$ java Java
Fri Sep 14 11:24:34 GMT+01:00 2012
sun.util.calendar.ZoneInfo[id="GMT+01:00",offset=3600000,dstSavings=0,useDaylight=false,transitions=0,lastRule=null]

### the zoneinfo above should really say GMT+2 and dstSavings of one hour.

me@ubuntu:/tmp/bug$ javac -version
javac 1.6.0_24

me@ubuntu:/tmp/bug$ ls -l /etc/alternatives/javac
lrwxrwxrwx 1 root root 43 sep 14 11:51 /etc/alternatives/javac -> /usr/lib/jvm/java-6-openjdk-amd64/bin/javac

me@ubuntu:/tmp/bug$ java -version
java version "1.6.0_24"
OpenJDK Runtime Environment (IcedTea6 1.11.4) (6b24-1.11.4-1ubuntu0.12.04.1)
OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)

me@ubuntu:/tmp/bug$ dpkg --list | grep tzdata
ii tzdata 2012e-0ubuntu0.12.04 time zone and daylight-saving time data
ii tzdata-java 2012e-0ubuntu0.12.04 time zone and daylight-saving time data for use by java runtimes

me@ubuntu:/tmp/bug$ dpkg --list | grep jdk
ii openjdk-6-jdk 6b24-1.11.4-1ubuntu0.12.04.1 OpenJDK Development Kit (JDK)
ii openjdk-6-jre 6b24-1.11.4-1ubuntu0.12.04.1 OpenJDK Java runtime, using Hotspot JIT
ii openjdk-6-jre-headless 6b24-1.11.4-1ubuntu0.12.04.1 OpenJDK Java runtime, using Hotspot JIT (headless)
ii openjdk-6-jre-lib 6b24-1.11.4-1ubuntu0.12.04.1 OpenJDK Java runtime (architecture independent libraries)
ii openjdk-7-jdk 7u7-2.3.2-1ubuntu0.12.04.1 OpenJDK Development Kit (JDK)
ii openjdk-7-jre 7u7-2.3.2-1ubuntu0.12.04.1 OpenJDK Java runtime, using Hotspot JIT
ii openjdk-7-jre-headless 7u7-2.3.2-1ubuntu0.12.04.1 OpenJDK Java runtime, using Hotspot JIT (headless)
ii openjdk-7-jre-lib 7u7-2.3.2-1ubuntu0.12.04.1 OpenJDK Java runtime (architecture independent libraries)

me@ubuntu:/tmp/bug$ md5sum /etc/localtime /usr/share/zoneinfo/Europe/Stockholm
1b9ed89af7331c6141249d181b42c621 /etc/localtime
1b9ed89af7331c6141249d181b42c621 /usr/share/zoneinfo/Europe/Stockholm

me@ubuntu:/tmp/bug$ env | egrep "(LANG|LC)" | sort
LANG=sv_SE.UTF-8
LANGUAGE=sv:en
LC_ADDRESS=sv_SE.UTF-8
LC_IDENTIFICATION=sv_SE.UTF-8
LC_MEASUREMENT=sv_SE.UTF-8
LC_MONETARY=sv_SE.UTF-8
LC_NAME=sv_SE.UTF-8
LC_NUMERIC=sv_SE.UTF-8
LC_PAPER=sv_SE.UTF-8
LC_TELEPHONE=sv_SE.UTF-8
LC_TIME=sv_SE.UTF-8

[Fredrik Wendt (fredrik-wendt)]

I've tested this on my laptop with Ubuntu 11.10 and I get a different output from "java Java":
sun.util.calendar.ZoneInfo[id="Europe/Stockholm",offset=3600000,dstSavings=3600000,useDaylight=true,transitions=119,lastRule=java.util.SimpleTimeZone[id=Europe/Stockholm,offset=3600000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=2,startMonth=2,startDay=-1,startDayOfWeek=1,startTime=3600000,startTimeMode=2,endMode=2,endMonth=9,endDay=-1,endDayOfWeek=1,endTime=3600000,endTimeMode=2]]

md5sums are the same: md5sum /etc/localtime /usr/share/zoneinfo/Europe/Stockholm
1b9ed89af7331c6141249d181b42c621 /etc/localtime
1b9ed89af7331c6141249d181b42c621 /usr/share/zoneinfo/Europe/Stockholm

[Fredrik Wendt (fredrik-wendt)]

I solved this one by reinstalling tzdata and tzdata-java. No idea where things got wrong, but please close this report as not a bug. (It's not related to the JDK at least.)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Nils Fredrik Gjerull (nfg)]

This happened to me too. Reinstallation of tzdata and tzdata-java fixed the problem. The Oracle JVM was not affected by this, only OpenJDK. Strange.

[Vladimir Mokrozub (mogaba2009)]

Had the same problem with OpenJDK 6b24 and Ubuntu Server 12.04 running as OpenVZ under Proxmox 1.9.
Reinstalling tzdata and tzdata-java fixed it.