SimpleTimeZone is a concrete subclass of TimeZone
that represents a time zone for use with a Gregorian calendar. This
class does not handle historical changes.
Use a negative value for dayOfWeekInMonth to indicate that
SimpleTimeZone should count from the end of the month backwards.
For example, Daylight Savings Time ends at the last
(dayOfWeekInMonth = -1) Sunday in October, at 2 AM in standard time.
Constructs a SimpleTimeZone with the given base time zone offset from GMT
and time zone ID. Timezone IDs can be obtained from
TimeZone.getAvailableIDs. Normally you should use TimeZone.getDefault to
construct a TimeZone.
Parameters:
rawOffset - The given base time zone offset to GMT.
ID - The time zone ID which is obtained from
TimeZone.getAvailableIDs.
SimpleTimeZone
public SimpleTimeZone(int rawOffset,
String ID,
int startMonth,
int startDay,
int startDayOfWeek,
int startTime,
int endMonth,
int endDay,
int endDayOfWeek,
int endTime)
Construct a SimpleTimeZone with the given base time zone offset from
GMT, time zone ID, time to start and end the daylight time. Timezone IDs
can be obtained from TimeZone.getAvailableIDs. Normally you should use
TimeZone.getDefault to create a TimeZone. For a time zone that does not
use daylight saving time, do not use this constructor; instead you should
use SimpleTimeZone(rawOffset, ID).
By default, this constructor specifies day-of-week-in-month rules. That
is, if the startDay is 1, and the startDayOfWeek is SUNDAY, then this
indicates the first Sunday in the startMonth. A startDay of -1 likewise
indicates the last Sunday. However, by using negative or zero values for
certain parameters, other types of rules can be specified.
Day of month. To specify an exact day of the month, such as March 1, set
startDayOfWeek to zero.
Day of week after day of month. To specify the first day of the week
occurring on or after an exact day of the month, make the day of the week
negative. For example, if startDay is 5 and startDayOfWeek is -MONDAY,
this indicates the first Monday on or after the 5th day of the
startMonth.
Day of week before day of month. To specify the last day of the week
occurring on or before an exact day of the month, make the day of the
week and the day of the month negative. For example, if startDay is -21
and startDayOfWeek is -WEDNESDAY, this indicates the last Wednesday on or
before the 21st of the startMonth.
The above examples refer to the startMonth, startDay, and startDayOfWeek;
the same applies for the endMonth, endDay, and endDayOfWeek.
Parameters:
rawOffset - The given base time zone offset to GMT.
ID - The time zone ID which is obtained from
TimeZone.getAvailableIDs.
startMonth - The daylight savings starting month. Month is
0-based. eg, 0 for January.
startDay - The daylight savings starting
day-of-week-in-month. Please see the member
description for an example.
startDayOfWeek - The daylight savings starting day-of-week. Please
see the member description for an example.
startTime - The daylight savings starting time. Please see the
member description for an example.
endMonth - The daylight savings ending month. Month is
0-based. eg, 0 for January.
endDay - The daylight savings ending day-of-week-in-month.
Please see the member description for an example.
endDayOfWeek - The daylight savings ending day-of-week. Please
see the member description for an example.
endTime - The daylight savings ending time. Please see the
member description for an example.
public void setStartRule(int month,
int dayOfWeekInMonth,
int dayOfWeek,
int time)
Sets the daylight savings starting rule. For example, Daylight Savings
Time starts at the first Sunday in April, at 2 AM in standard time.
Therefore, you can set the start rule by calling:
setStartRule(TimeFields.APRIL, 1, TimeFields.SUNDAY, 2*60*60*1000);
Parameters:
month - The daylight savings starting month. Month is
0-based. eg, 0 for January.
dayOfWeekInMonth - The daylight savings starting
day-of-week-in-month. Please see the member
description for an example.
dayOfWeek - The daylight savings starting day-of-week.
Please see the member description for an
example.
time - The daylight savings starting time. Please see
the member description for an example.
public void setEndRule(int month,
int dayOfWeekInMonth,
int dayOfWeek,
int time)
Sets the daylight savings ending rule. For example, Daylight Savings Time
ends at the last (-1) Sunday in October, at 2 AM in standard time.
Therefore, you can set the end rule by calling:
setEndRule(TimeFields.OCTOBER, -1, TimeFields.SUNDAY, 2*60*60*1000);
Parameters:
month - The daylight savings ending month. Month is
0-based. eg, 0 for January.
dayOfWeekInMonth - The daylight savings ending
day-of-week-in-month. Please see the member
description for an example.
dayOfWeek - The daylight savings ending day-of-week. Please
see the member description for an example.
time - The daylight savings ending time. Please see the
member description for an example.
public int getOffset(int era,
int year,
int month,
int day,
int dayOfWeek,
int millis)
Overrides TimeZone
Gets offset, for current date, modified in case of
daylight savings. This is the offset to add *to* UTC to get local time.
Gets the time zone offset, for current date, modified in case of daylight
savings. This is the offset to add *to* UTC to get local time. Assume
that the start and end month are distinct. This method may return incorrect
results for rules that start at the end of February (e.g., last Sunday in
February) or the beginning of March (e.g., March 1).
Parameters:
era - The era of the given date.
year - The year in the given date.
month - The month in the given date. Month is 0-based. e.g.,
0 for January.
day - The day-in-month of the given date.
dayOfWeek - The day-of-week of the given date.
millis - The milliseconds in day in standard local time.
Overrides TimeZone
Sets the base time zone offset to GMT.
This is the offset to add *to* UTC to get local time.
Please see TimeZone.setRawOffset for descriptions on the parameter.
Submit a bug or feature - Version 1.1.8 of Java Platform API Specification
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