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  1. JDK
  2. JDK-4088590

Atlantic %s Time SimpleTimeZone Name wrong.

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P3
    • Resolution: Duplicate
    • Affects Version/s: 1.1.4
    • Fix Version/s: None
    • Component/s: core-libs
    • Subcomponent:
    • CPU:
      sparc
    • OS:
      solaris_2.5.1

      Description



      Name: joT67522 Date: 10/24/97


      The attached applet exhibits a long time zone name
      which is different from the name in the TimeZone.java
      SimpleTimeZone table comments. (The Comment column was
      added by hand.)


      Ordinal ID rawOffset(hh:mm) dstOffset(hh:mm) long name Comment
      19 AST -09:00 -09:00 Atlantic Standard Time Alaska Standard Time

      /*
       * @(#)TZApplet.java 1.0 9/19/1997
       *
       * Copyright (c) 1997 by Sun Microsystems, Inc. All Rights Reserved
       *
       * Date Author Change
       * 9/19/97 Wally Wedel Created
       *
       */

      import java.applet.*;

      import java.awt.Color;
      import java.awt.GridLayout;

      import java.text.SimpleDateFormat;
      import java.text.FieldPosition;

      import java.util.Calendar;
      import java.util.Date;
      import java.util.SimpleTimeZone;
      import java.util.TimeZone;

      // import jclass.bwt.JCMultiColumnList;

      /**
        * TZApplet is a class to test JDK 1.1 time zone support.
       *
       * @author Wally Wedel
       *
       */
      public class TZApplet extends Applet {
          int MILLISPERHOUR = 60*60*1000;
          /**
           * Construct myself with default values.
          **/
          public TZApplet() {
              super();
          }
          /**
           * A few simple tests.
          **/
          public void init() {
              String[] cols = {"Ordinal","ID","GMTOffset", "DSTOffset","Name"};
              /*
               * Instantiate a TimeZone so we can get the ids.
               */
              TimeZone tz = new SimpleTimeZone(-7*MILLISPERHOUR,"PNT");
              /*
               * Computational variables.
               */
              int offset, rawOffset, minutesOffset, hours, minutes, rHours, rMinutes;
              /*
               * Instantiate a SimpleDateFormat set up to produce a full time zone name.
               */
              SimpleDateFormat sdf = new SimpleDateFormat("zzzz");
              /*
               * A String array for the time zone ids.
               */
              String[] ids = tz.getAvailableIDs();
              /*
               * Instantiate a Date.
               */
              Date aDay = new Date(1997,1,1);
              /*
               * How many ids do we have?
               */
              System.out.println(" Time Zone IDs size: " + ids.length);
              /*
               * Column headings (sort of)
               */
              System.out.println("Ordinal ID rawOffset(hh:mm) dstOffset(hh:mm) name");
              setLayout(new GridLayout(1,1));
              setBackground(Color.lightGray);
              // JCMultiColumnList mcl = new JCMultiColumnList();

              /*
               * Loop through the tzs.
               */
              for (int i = 0; i < ids.length; i++) {
                  // System.out.println(i + " " + ids[i]);
                  TimeZone ttz = tz.getTimeZone(ids[i]);
                  rawOffset = ttz.getRawOffset();
                  offset = getDSTOffset(ttz, aDay);

                  char sign = '+';
                  if (offset < 0) {
                      sign = '-';
                      offset = -offset;
                      rawOffset = -rawOffset;
                  }

                  // System.out.println(i + " " + ids[i] + " offset " + offset);
                  rHours = rawOffset/3600000;
                  hours = offset/3600000;
                  rMinutes = (rawOffset%3600000)/60000;
                  minutes = (offset%3600000)/60000;

                  String dstOffset = "" + sign + (hours < 10 ? "0" : "") +
                          hours + ':' + (minutes < 10 ? "0" : "") + minutes;
                  String gmtOffset = "" + sign + (rHours < 10 ? "0" : "") +
                          rHours + ':' + (rMinutes < 10 ? "0" : "") + rMinutes;

                  // System.out.println(i + " " + ids[i] + " offset " + hours + ":" + minutes);
                  sdf.setTimeZone(ttz);
                  /*
                   * Format the output.
                   */
                  StringBuffer tzS = new StringBuffer();
                  sdf.format(aDay,tzS, new FieldPosition(0));
                  /*
                   * Show our result.
                   */
                  System.out.println(i + " " + ids[i] + " " + gmtOffset + " " + dstOffset + " " + tzS);
                  String row = (new Integer(i)).toString() + "|" + ids[i] + "|" + gmtOffset + "|" + dstOffset + "|" + tzS.toString();
                  // mcl.addItem(row,'|');


              }
              // mcl.setColumnButtons(cols);
              // add(mcl);
          }

          public void start() {
          }

          public void stop() {
          }

          public void destroy() {
          }

          public int getDSTOffset(TimeZone tz, Date date) {
              /*
               * Instantiate a Calendar so we can get DST offset.
               */
              Calendar cal = Calendar.getInstance();
              cal.setTimeZone(tz);
              cal.setTime(date);
              return cal.get(Calendar.ZONE_OFFSET) +
                          cal.get(Calendar.DST_OFFSET);
          }

          public static void main(String args[]) {
      Applet a = new TZApplet();
      a.init();
          }
      }




      The proper acronym per the NIH tables is AKST but that's more than three
      letters! Here are the pertinent comments from the NIH northamerica data:

      # From Bob Devine (1988-01-28):
      # ...Alaska (and Hawaii) had the timezone names changed in 1967.
      # old new
      # Pacific Standard Time(PST) -same-
      # Yukon Standard Time(YST) -same-
      # Central Alaska S.T. (CAT) Alaska-Hawaii St[an]dard Time (AHST)
      # Nome Standard Time (NT) Bering Standard Time (BST)
      #
      # ...Alaska's timezone lines were redrawn in 1983 to give only 2 tz.
      # The YST zone now covers nearly all of the state, AHST just part
      # of the Aleutian islands. No DST.

      # From Paul Eggert (1995-12-19):
      # The tables below use `NST', not `NT', for Nome Standard Time.
      # I invented `CAWT' for Central Alaska War Time.

      # From U. S. Naval Observatory (1989-01-19):
      # USA EASTERN 5 H BEHIND UTC NEW YORK, WASHINGTON
      # USA EASTERN 4 H BEHIND UTC APR 3 - OCT 30
      # USA CENTRAL 6 H BEHIND UTC CHICAGO, HOUSTON
      # USA CENTRAL 5 H BEHIND UTC APR 3 - OCT 30
      # USA MOUNTAIN 7 H BEHIND UTC DENVER
      # USA MOUNTAIN 6 H BEHIND UTC APR 3 - OCT 30
      # USA PACIFIC 8 H BEHIND UTC L.A., SAN FRANCISCO
      # USA PACIFIC 7 H BEHIND UTC APR 3 - OCT 30
      # USA ALASKA STD 9 H BEHIND UTC MOST OF ALASKA (AKST)
      # USA ALASKA STD 8 H BEHIND UTC APR 3 - OCT 30 (AKDT)
      # USA ALEUTIAN 10 H BEHIND UTC ISLANDS WEST OF 170W
      # USA - " - 9 H BEHIND UTC APR 3 - OCT 30
      # USA HAWAII 10 H BEHIND UTC
      # USA BERING 11 H BEHIND UTC SAMOA, MIDWAY

      # From Arthur David Olson (1989-01-21):
      # The above dates are for 1988.
      # Note the "AKST" and "AKDT" abbreviations, the claim that there's
      # no DST in Samoa, and the claim that there is DST in Alaska and the
      # Aleutians.

      ======================================================================

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              Assignee:
              aliusunw Alan Liu (Inactive)
              Reporter:
              johsunw Joon Oh (Inactive)
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