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  1. JDK
  2. JDK-8058523

Wrong timezone shortcode output for Europe/London for 1971-10-31 01:59:59 UTC

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: P5 P5
    • None
    • 7u67
    • core-libs

      FULL PRODUCT VERSION :
      java version "1.7.0_67"
      Java(TM) SE Runtime Environment (build 1.7.0_67-b01)
      Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)


      ADDITIONAL OS VERSION INFORMATION :
      Linux isis-ws-056 3.13.0-35-generic #62-Ubuntu SMP Fri Aug 15 01:58:42 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux


      A DESCRIPTION OF THE PROBLEM :
      The time 1971-10-31 01:59:59 UTC when output in timezone Europe/London is output as being in GMT but with an offset of 1 hour.




      ADDITIONAL REGRESSION INFORMATION:
      Happens on all versions of java I have.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Run supplied source

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      1971-10-31 01:59:59 UTC (+0000)
      1971-10-31 02:59:59 BST (+0100)
      ACTUAL -
      1971-10-31 01:59:59 UTC (+0000)
      1971-10-31 02:59:59 GMT (+0100)

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      import java.text.SimpleDateFormat;
      import java.util.Calendar;
      import java.util.TimeZone;

      public class Doh
      {
        public static void main(String[] args)
        {
          SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z (ZZZZ)");
          TimeZone utcTz = TimeZone.getTimeZone("UTC");
          Calendar utcCal = Calendar.getInstance(utcTz);
          utcCal.setTimeInMillis(57722399000L);
          format.setTimeZone(utcTz);
          System.out.println(format.format(utcCal.getTime()));

          TimeZone lonTz = TimeZone.getTimeZone("Europe/London");
          format.setTimeZone(lonTz);
          System.out.println(format.format(utcCal.getTime()));
          
          System.out.println(System.getProperty("java.version"));
        }
      }
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      No workaround.

            okutsu Masayoshi Okutsu
            webbuggrp Webbug Group
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              Created:
              Updated:
              Resolved: