Examples of java.util.TimeZone.inDaylightTime()

java.util.TimeZone.inDaylightTime()
Queries if the given date is in daylight savings time in this time zone. @param date the given Date. @return true if the given date is in daylight savings time,false, otherwise.

        int hours = offset / (60 * 60 * 1000);
        int minutes = (offset - (hours * 60 * 60 * 1000)) / (60 * 1000);


        try
        {
            if (timeZone.useDaylightTime() && timeZone.inDaylightTime(this.getDate()))
            {
                hours += sign.equals("+") ? 1 : -1;
            }
        }
        catch (ParseException e)

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  /**
   * Shows the current time zone (based on the current time) short name
   */
  private static String getShortTZName() {
    TimeZone tz = TimeZone.getDefault();
    return tz.getDisplayName(tz.inDaylightTime(new Date()), TimeZone.SHORT);
  }
  
  /**
   * Converts a unix timestamp in UTC to one that is relative to the local timezone
   */

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      int gmtoff = Integer.parseInt(
        line.substring(start3 + 8, line.length()));


      harness.debug("Zone " + zone + " " + d +
        " isdst=" + isdst +
        " inDaylightTime=" + tz.inDaylightTime(d));
      harness.check(tz.inDaylightTime(d) == (isdst != 0));


      harness.debug("Zone " + zone + " " + d +
        " gmtoff=" + gmtoff +
        " getOffset=" + tz.getOffset(d.getTime()));

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        line.substring(start3 + 8, line.length()));


      harness.debug("Zone " + zone + " " + d +
        " isdst=" + isdst +
        " inDaylightTime=" + tz.inDaylightTime(d));
      harness.check(tz.inDaylightTime(d) == (isdst != 0));


      harness.debug("Zone " + zone + " " + d +
        " gmtoff=" + gmtoff +
        " getOffset=" + tz.getOffset(d.getTime()));
      harness.check(tz.getOffset(d.getTime()) == gmtoff * 1000);

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      -12600000, "Canada/Newfoundland",
      Calendar.MARCH, 8, -Calendar.SUNDAY, 60000,
      Calendar.NOVEMBER, 1, -Calendar.SUNDAY, 60000);


    cal.set(2037, Calendar.NOVEMBER, 1, 2, 30, 0);
    harness.check(tz1.inDaylightTime(new Date(cal.getTimeInMillis())));


    cal.set(2037, Calendar.NOVEMBER, 1, 2, 31, 0);
    harness.check(!tz1.inDaylightTime(new Date(cal.getTimeInMillis())));


    cal.set(2038, Calendar.JANUARY, 1, 2, 29, 0);

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    cal.set(2037, Calendar.NOVEMBER, 1, 2, 30, 0);
    harness.check(tz1.inDaylightTime(new Date(cal.getTimeInMillis())));


    cal.set(2037, Calendar.NOVEMBER, 1, 2, 31, 0);
    harness.check(!tz1.inDaylightTime(new Date(cal.getTimeInMillis())));


    cal.set(2038, Calendar.JANUARY, 1, 2, 29, 0);
    harness.check(!tz1.inDaylightTime(new Date(cal.getTimeInMillis())));


    harness.checkPoint("test 2");

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    cal.set(2037, Calendar.NOVEMBER, 1, 2, 31, 0);
    harness.check(!tz1.inDaylightTime(new Date(cal.getTimeInMillis())));


    cal.set(2038, Calendar.JANUARY, 1, 2, 29, 0);
    harness.check(!tz1.inDaylightTime(new Date(cal.getTimeInMillis())));


    harness.checkPoint("test 2");


    TimeZone tz2 = new SimpleTimeZone(
      -12600000, "Test1",

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      3600000);


    // NB this particular check fails on several proprietary JVMs
    // because the end time is interpreted with startTimeMode.
    cal.set(2037, Calendar.NOVEMBER, 1, 3, 30, 0);
    harness.check(tz2.inDaylightTime(new Date(cal.getTimeInMillis())));


    cal.set(2037, Calendar.NOVEMBER, 1, 3, 31, 0);
    harness.check(!tz2.inDaylightTime(new Date(cal.getTimeInMillis())));


    cal.set(2038, Calendar.JANUARY, 1, 3, 29, 0);

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    // because the end time is interpreted with startTimeMode.
    cal.set(2037, Calendar.NOVEMBER, 1, 3, 30, 0);
    harness.check(tz2.inDaylightTime(new Date(cal.getTimeInMillis())));


    cal.set(2037, Calendar.NOVEMBER, 1, 3, 31, 0);
    harness.check(!tz2.inDaylightTime(new Date(cal.getTimeInMillis())));


    cal.set(2038, Calendar.JANUARY, 1, 3, 29, 0);
    harness.check(!tz2.inDaylightTime(new Date(cal.getTimeInMillis())));


    harness.checkPoint("test 3");

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    cal.set(2037, Calendar.NOVEMBER, 1, 3, 31, 0);
    harness.check(!tz2.inDaylightTime(new Date(cal.getTimeInMillis())));


    cal.set(2038, Calendar.JANUARY, 1, 3, 29, 0);
    harness.check(!tz2.inDaylightTime(new Date(cal.getTimeInMillis())));


    harness.checkPoint("test 3");


    TimeZone tz3 = new SimpleTimeZone(
      -12600000, "Test2",

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