Name: sl110371 Date: 06/28/2000


java version "1.1.8"

I'm in Brazil and I?m trying to use daylight saving with JDK1.1.8. The switch
time happens at 00:00 hrs. If we set the start switch date in Oct, 8th 2000
00:00:00 and the end switch date to March , 5th 2000 00:00:00.
In the start switch date we expect the following times:

  Sat Oct 07 22:00:00 GMT-3 2000
  Sat Oct 07 23:00:00 GMT-3 2000
  Sun Oct 08 01:00:00 GMT-2 2000
  Sun Oct 08 02:00:00 GMT-2 2000

And in the end switch date we expect the following times:

  Sat Mar 04 22:00:00 GMT-02:00 2000
  Sat Mar 04 23:00:00 GMT-02:00 2000
  Sat Mar 04 23:00:00 GMT-03:00 2000
  Sun Mar 05 00:00:00 GMT-03:00 2000
  Sun Mar 05 01:00:00 GMT-03:00 2000

I'm using the Brazilian TimeZone ("BET") and setting the daylight saving as
explained above:

  SimpleTimeZone pdt = (SimpleTimeZone)TimeZone.getTimeZone("BET");
  Locale aLocale = new Locale("pt", "BR");
  Locale.setDefault(aLocale);
  pdt.setStartRule(9, 2, 1, 0);
  pdt.setEndRule(2, 1, 1, 0);
  TimeZone.setDefault(pdt);

And the behavior of the dates in the end switch date is:

  Sat Mar 04 22:00:00 GMT-02:00 2000
  Sat Mar 04 23:00:00 GMT-02:00 2000
  Sun Mar 05 00:00:00 GMT-02:00 2000
  Sun Mar 05 00:00:00 GMT-03:00 2000
  Sun Mar 05 01:00:00 GMT-03:00 2000

And for the start switch date, if I do a

  Date aDate = new Date(100,9,7,24,0,0);
  System.out.println("new Date(100,9,7,24,0,0): " + aDate.toString());
  aDate = new Date(aDate,2000,9,8,0,0,0);
  System.out.println("new Date(100,9,8,0,0,0): " + aDate.toString());

The output is:

  new Date(100,9,7,24,0,0): Sun Oct 08 01:00:00 PDT 2000
  new Date(100,9,8,0,0,0): Sat Oct 07 23:00:00 PST 2000

I have tried the following test

  SimpleTimeZone pdt = (SimpleTimeZone)TimeZone.getTimeZone("PST");
  Locale.setDefault(aLocale);
  pdt.setStartRule(9, 2, 1, 0);
  pdt.setEndRule(2, 1, 1, 0);
  TimeZone.setDefault(pdt);

The behavior is the same, when I do a new Date in the non existing hour of the
short day (new Date(aDate,2000,9,8,0,0,0);) instead of go to the Sun Oct 08
01:00:00 PDT 2000 it goes to Sat Oct 07 23:00:00 PST 2000. And in the long day
it goes twice to Sun Mar 05 00:00:00 instead of Sat Mar 04 23:00:00.

Does anyone have any idea? Any suggestion would be very important to us.
Thanks in advance.

Source code:

import java.io.File;
import java.util.Vector;
import java.util.SimpleTimeZone;
import java.util.TimeZone;
import java.util.Locale;
import java.util.Calendar;
import java.util.Date;
import java.text.SimpleDateFormat;

public class TestDriver implements Runnable
{
    public final int YEAR = Calendar.YEAR;
    public final int MONTH = Calendar.MONTH;
    public final int DATE = Calendar.DATE;
    public final int HOUR = Calendar.HOUR;
    public final int MINUTE = Calendar.MINUTE;
    public final int SECOND = Calendar.SECOND;
    
    public static void main(String[] args)
    {
        Thread thread = new Thread(new TestDriver());
        thread.start();
    }
    public void add (Date aDate, int i, int unit)
    {
        Calendar myCalendar = (Calendar)Calendar.getInstance();
        myCalendar.setTime(aDate);
        myCalendar.setFirstDayOfWeek(Calendar.SUNDAY);
        myCalendar.setMinimalDaysInFirstWeek(7);
        myCalendar.set(unit, myCalendar.get(unit) + i);
        aDate.setTime(myCalendar.getTime().getTime());
    }
    public void set(Date aDate, int year, int month, int date, int hour, int
    minute, int second)
    {
        Calendar myCalendar = (Calendar)Calendar.getInstance();
        myCalendar.set(year, month, date, hour, minute, second);
        myCalendar.setFirstDayOfWeek(Calendar.SUNDAY);
        myCalendar.setMinimalDaysInFirstWeek(7);
        aDate.setTime(myCalendar.getTime().getTime());
        myCalendar.add(HOUR, 1);
    }

    public void run()
    {
            Date aDate = new Date();
            // Start 9;2;1;0 08/10/2000 00:00
            // End 2;1;1;0 05/03/2000 00:00

            SimpleTimeZone pdt = (SimpleTimeZone)TimeZone.getTimeZone("BET");
            Locale aLocale = new Locale("pt", "BR");
            Locale.setDefault(aLocale);
            pdt.setStartRule(9, 2, 1, 0);
            pdt.setEndRule(2, 1, 1, 0);
            TimeZone.setDefault(pdt);
            SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy HH:mm zz",
                                                        aLocale);

            System.out.println();
            System.out.println("Start 9;2;1;0 08/10/2000 00:00");
            System.out.println("End 2;1;1;0 05/03/2000 00:00");
            System.out.println();
            System.out.println("Constructor:");
            this.set(aDate,2000,1,23,0,0,0);
            System.out.println("new Date(100,1,23,0,0,0): " + sdf.format
(aDate));
            this.set(aDate,2000,2,4,22,0,0);
            System.out.println("new Date(100,2,4,22,0,0): " + sdf.format
(aDate));
            this.set(aDate,2000,2,4,23,0,0);
            System.out.println("new Date(100,2,4,23,0,0): " + sdf.format
(aDate));
            this.set(aDate,2000,2,4,24,0,0);
            System.out.println("new Date(100,2,4,24,0,0): " + sdf.format
(aDate));
            this.set(aDate,2000,2,5,0,0,0);
            System.out.println("new Date(100,2,5,0,0,0): " + sdf.format(aDate));
            this.set(aDate,2000,2,5,1,0,0);
            System.out.println("new Date(100,2,5,1,0,0): " + sdf.format(aDate));
            this.set(aDate,2000,4,10,0,0,0);
            System.out.println("new Date(100,4,10,0,0,0): " + sdf.format
(aDate));
            this.set(aDate,2000,9,7,23,0,0);
            System.out.println("new Date(100,9,7,23,0,0): " + sdf.format
(aDate));
            this.set(aDate,2000,9,8,0,0,0);
            System.out.println("new Date(100,9,8,0,0,0): " + sdf.format(aDate));
            this.set(aDate,2000,9,8,1,0,0);
            System.out.println("new Date(100,9,8,1,0,0): " + sdf.format(aDate));
            this.set(aDate,2000,10,23,0,0,0);
            System.out.println("new Date(100,10,23,0,0,0): " + sdf.format
(aDate));

            System.out.println();
            System.out.println("Add minute:");
            this.set(aDate,2000,1,23,0,0,0);
            System.out.println("new Date(100,1,23,0,0,0): " + sdf.format
(aDate));
            this.add(aDate, 1, this.MINUTE);
            System.out.println("add(1,MINUTE): " + sdf.format(aDate));
            this.set(aDate,2000,2,4,22,59,0);
            System.out.println("new Date(100,2,4,22,59,0): " + sdf.format
(aDate));
            this.add(aDate, 1, this.MINUTE);
            System.out.println("add(1,MINUTE): " + sdf.format(aDate));
            this.set(aDate,2000,2,4,23,59,0);
            System.out.println("new Date(100,2,4,23,59,0): " + sdf.format
(aDate));
            this.add(aDate, 1, this.MINUTE);
            System.out.println("add(1,MINUTE): " + sdf.format(aDate));
            this.set(aDate,2000,2,5,0,0,0);
            System.out.println("new Date(100,2,5,0,0,0): " + sdf.format(aDate));
            this.add(aDate, 1, this.MINUTE);
            System.out.println("add(1,MINUTE): " + sdf.format(aDate));
            this.set(aDate,2000,4,10,0,0,0);
            System.out.println("new Date(100,4,10,0,0,0): " + sdf.format
(aDate));
            this.add(aDate, 1, this.MINUTE);
            System.out.println("add(1,MINUTE): " + sdf.format(aDate));
            this.set(aDate,2000,9,7,23,59,0);
            System.out.println("new Date(100,9,7,23,59,0): " + sdf.format
(aDate));
            this.add(aDate, 1, this.MINUTE);
            System.out.println("add(1,MINUTE): " + sdf.format(aDate));
            this.set(aDate,2000,9,8,0,0,0);
            System.out.println("new Date(100,9,8,0,0,0): " + sdf.format(aDate));
            this.add(aDate, 1, this.MINUTE);
            System.out.println("add(1,MINUTE): " + sdf.format(aDate));
            this.set(aDate,2000,10,23,0,0,0);
            System.out.println("new Date(100,10,23,0,0,0): " + sdf.format
(aDate));
            this.add(aDate, 1, this.MINUTE);
            System.out.println("add(1,MINUTE): " + sdf.format(aDate));
    }
}

Output:

Start 9;2;1;0 08/10/2000 00:00
End 2;1;1;0 05/03/2000 00:00

Constructor:
new Date(100,1,23,0,0,0): 23/02/2000 00:00 GMT-02:00
new Date(100,2,4,22,0,0): 04/03/2000 22:00 GMT-02:00
new Date(100,2,4,23,0,0): 04/03/2000 23:00 GMT-02:00
new Date(100,2,4,24,0,0): 05/03/2000 00:00 GMT-02:00
new Date(100,2,5,0,0,0): 05/03/2000 00:00 GMT-03:00
new Date(100,2,5,1,0,0): 05/03/2000 01:00 GMT-03:00
new Date(100,4,10,0,0,0): 10/05/2000 00:00 GMT-03:00
new Date(100,9,7,23,0,0): 07/10/2000 23:00 GMT-03:00
new Date(100,9,8,0,0,0): 07/10/2000 23:00 GMT-03:00
new Date(100,9,8,1,0,0): 08/10/2000 01:00 GMT-02:00
new Date(100,10,23,0,0,0): 23/11/2000 00:00 GMT-02:00

Add minute:
new Date(100,1,23,0,0,0): 23/02/2000 00:00 GMT-02:00
add(1,MINUTE): 23/02/2000 00:01 GMT-02:00
new Date(100,2,4,22,59,0): 04/03/2000 22:59 GMT-02:00
add(1,MINUTE): 04/03/2000 23:00 GMT-02:00
new Date(100,2,4,23,59,0): 04/03/2000 23:59 GMT-02:00
add(1,MINUTE): 05/03/2000 00:00 GMT-02:00
new Date(100,2,5,0,0,0): 05/03/2000 00:00 GMT-03:00
add(1,MINUTE): 05/03/2000 00:01 GMT-03:00
new Date(100,4,10,0,0,0): 10/05/2000 00:00 GMT-03:00
add(1,MINUTE): 10/05/2000 00:01 GMT-03:00
new Date(100,9,7,23,59,0): 07/10/2000 23:59 GMT-03:00
add(1,MINUTE): 08/10/2000 01:00 GMT-02:00
new Date(100,9,8,0,0,0): 07/10/2000 23:00 GMT-03:00
add(1,MINUTE): 07/10/2000 23:01 GMT-03:00
new Date(100,10,23,0,0,0): 23/11/2000 00:00 GMT-02:00
add(1,MINUTE): 23/11/2000 00:01 GMT-02:00
(Review ID: 106615)
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