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  1. JDK
  2. JDK-4074747

ECT TimeZone data is wrong

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: P3 P3
    • None
    • unknown, 1.1.3
    • core-libs
    • x86, sparc
    • solaris_2.5.1, windows_nt



      Name: diC59631 Date: 08/27/97


      In file java/util/TimeZone.java:

      1. TimeZone information for 'European Central Time' contains
          wrong information: Since 1996, daylight saving time ends on
          the last sunday in october, but java/util/TimeZone.java
          contains `sunday of last week in september'


      [second unrelated problem]
      2. A solaris system located in 'central europe' typically uses the
          timezone id 'TZ=MET' which is interpreted by java as 'Middle
          East Time', which leads to unexpected local time values due
          to the wrong localtime vs. gmttime offset (3.5 hours vs. 1 hour)


      Source code to reproduce the problem:

      import java.util.*;
       
      public class Cal2 {
          public static void main(String[] args) {
              GregorianCalendar c;

              c = new GregorianCalendar(1997, 7, 30, 12, 00, 30);
              System.out.println(c.getTime());

              c = new GregorianCalendar(1997, 8, 30, 12, 00, 30);
              System.out.println(c.getTime());

              c = new GregorianCalendar(1997, 9, 30, 12, 00, 30);
              System.out.println(c.getTime());
          }
      }

      2% javac Cal2.java
      3% java -Duser.timezone=ECT Cal2
      Sat Aug 30 12:00:30 GMT+02:00 1997
      Tue Sep 30 12:00:30 GMT+01:00 1997
      Thu Oct 30 12:00:30 GMT+01:00 1997


      Note the wrong timezone offset for the second line which should
      read GMT+02:00 since daylight saving time is still effective on
      Sep, 30th in central europe!

      company - Tools GmbH , email - ###@###.###
      ======================================================================

            aliusunw Alan Liu (Inactive)
            dindrigo Daniel Indrigo (Inactive)
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