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Added in API level 1

SimpleTimeZone

public class SimpleTimeZone
extends TimeZone

java.lang.Object
↳	java.util.TimeZone
	↳	java.util.SimpleTimeZone

SimpleTimeZone is a concrete subclass of TimeZone that represents a time zone for use with a Gregorian calendar. The class holds an offset from GMT, called raw offset, and start and end rules for a daylight saving time schedule. Since it only holds single values for each, it cannot handle historical changes in the offset from GMT and the daylight saving schedule, except that the setStartYear method can specify the year when the daylight saving time schedule starts in effect.

To construct a SimpleTimeZone with a daylight saving time schedule, the schedule can be described with a set of rules, start-rule and end-rule. A day when daylight saving time starts or ends is specified by a combination of month, day-of-month, and day-of-week values. The month value is represented by a Calendar MONTH field value, such as MARCH. The day-of-week value is represented by a Calendar DAY_OF_WEEK value, such as SUNDAY. The meanings of value combinations are as follows.

Exact day of month
To specify an exact day of month, set the month and day-of-month to an exact value, and day-of-week to zero. For example, to specify March 1, set the month to MARCH, day-of-month to 1, and day-of-week to 0.
Day of week on or after day of month
To specify a day of week on or after an exact day of month, set the month to an exact month value, day-of-month to the day on or after which the rule is applied, and day-of-week to a negative DAY_OF_WEEK field value. For example, to specify the second Sunday of April, set month to APRIL, day-of-month to 8, and day-of-week to -SUNDAY.
Day of week on or before day of month
To specify a day of the week on or before an exact day of the month, set day-of-month and day-of-week to a negative value. For example, to specify the last Wednesday on or before the 21st of March, set month to MARCH, day-of-month is -21 and day-of-week is -WEDNESDAY.
Last day-of-week of month
To specify, the last day-of-week of the month, set day-of-week to a DAY_OF_WEEK value and day-of-month to -1. For example, to specify the last Sunday of October, set month to OCTOBER, day-of-week to SUNDAY and day-of-month to -1.

The time of the day at which daylight saving time starts or ends is specified by a millisecond value within the day. There are three kinds of modes to specify the time: WALL_TIME, STANDARD_TIME and UTC_TIME. For example, if daylight saving time ends at 2:00 am in the wall clock time, it can be specified by 7200000 milliseconds in the WALL_TIME mode. In this case, the wall clock time for an end-rule means the same thing as the daylight time.

The following are examples of parameters for constructing time zone objects.


      // Base GMT offset: -8:00
      // DST starts:      at 2:00am in standard time
      //                  on the first Sunday in April
      // DST ends:        at 2:00am in daylight time
      //                  on the last Sunday in October
      // Save:            1 hour
      SimpleTimeZone(-28800000,
                     "America/Los_Angeles",
                     Calendar.APRIL, 1, -Calendar.SUNDAY,
                     7200000,
                     Calendar.OCTOBER, -1, Calendar.SUNDAY,
                     7200000,
                     3600000)

      // Base GMT offset: +1:00
      // DST starts:      at 1:00am in UTC time
      //                  on the last Sunday in March
      // DST ends:        at 1:00am in UTC time
      //                  on the last Sunday in October
      // Save:            1 hour
      SimpleTimeZone(3600000,
                     "Europe/Paris",
                     Calendar.MARCH, -1, Calendar.SUNDAY,
                     3600000, SimpleTimeZone.UTC_TIME,
                     Calendar.OCTOBER, -1, Calendar.SUNDAY,
                     3600000, SimpleTimeZone.UTC_TIME,
                     3600000)

These parameter rules are also applicable to the set rule methods, such as setStartRule.

See also:

Summary

Constants
`int`	`STANDARD_TIME` Constant for a mode of start or end time specified as standard time.
`int`	`UTC_TIME` Constant for a mode of start or end time specified as UTC.
`int`	`WALL_TIME` Constant for a mode of start or end time specified as wall clock time.

Inherited constants

From class


    java.util.TimeZone

Public constructors
`SimpleTimeZone(int rawOffset, String ID)` Constructs a SimpleTimeZone with the given base time zone offset from GMT and time zone ID with no daylight saving time schedule.
`SimpleTimeZone(int rawOffset, String ID, int startMonth, int startDay, int startDayOfWeek, int startTime, int endMonth, int endDay, int endDayOfWeek, int endTime)` Constructs a SimpleTimeZone with the given base time zone offset from GMT, time zone ID, and rules for starting and ending the daylight time.
`SimpleTimeZone(int rawOffset, String ID, int startMonth, int startDay, int startDayOfWeek, int startTime, int endMonth, int endDay, int endDayOfWeek, int endTime, int dstSavings)` Constructs a SimpleTimeZone with the given base time zone offset from GMT, time zone ID, and rules for starting and ending the daylight time.
`SimpleTimeZone(int rawOffset, String ID, int startMonth, int startDay, int startDayOfWeek, int startTime, int startTimeMode, int endMonth, int endDay, int endDayOfWeek, int endTime, int endTimeMode, int dstSavings)` Constructs a SimpleTimeZone with the given base time zone offset from GMT, time zone ID, and rules for starting and ending the daylight time.

Public methods
`Object`	`clone()` Returns a clone of this `SimpleTimeZone` instance.
`boolean`	`equals(Object obj)` Compares the equality of two `SimpleTimeZone` objects.
`int`	`getDSTSavings()` Returns the amount of time in milliseconds that the clock is advanced during daylight saving time.
`int`	`getOffset(long date)` Returns the offset of this time zone from UTC at the given time.
`int`	`getOffset(int era, int year, int month, int day, int dayOfWeek, int millis)` Returns the difference in milliseconds between local time and UTC, taking into account both the raw offset and the effect of daylight saving, for the specified date and time.
`int`	`getRawOffset()` Gets the GMT offset for this time zone.
`boolean`	`hasSameRules(TimeZone other)` Returns `true` if this zone has the same rules and offset as another zone.
`int`	`hashCode()` Generates the hash code for the SimpleDateFormat object.
`boolean`	`inDaylightTime(Date date)` Queries if the given date is in daylight saving time.
`boolean`	`observesDaylightTime()` Returns `true` if this `SimpleTimeZone` observes Daylight Saving Time.
`void`	`setDSTSavings(int millisSavedDuringDST)` Sets the amount of time in milliseconds that the clock is advanced during daylight saving time.
`void`	`setEndRule(int endMonth, int endDay, int endDayOfWeek, int endTime, boolean after)` Sets the daylight saving time end rule to a weekday before or after the given date within a month, e.g., the first Monday on or after the 8th.
`void`	`setEndRule(int endMonth, int endDay, int endDayOfWeek, int endTime)` Sets the daylight saving time end rule.
`void`	`setEndRule(int endMonth, int endDay, int endTime)` Sets the daylight saving time end rule to a fixed date within a month.
`void`	`setRawOffset(int offsetMillis)` Sets the base time zone offset to GMT.
`void`	`setStartRule(int startMonth, int startDay, int startDayOfWeek, int startTime)` Sets the daylight saving time start rule.
`void`	`setStartRule(int startMonth, int startDay, int startTime)` Sets the daylight saving time start rule to a fixed date within a month.
`void`	`setStartRule(int startMonth, int startDay, int startDayOfWeek, int startTime, boolean after)` Sets the daylight saving time start rule to a weekday before or after the given date within a month, e.g., the first Monday on or after the 8th.
`void`	`setStartYear(int year)` Sets the daylight saving time starting year.
`String`	`toString()` Returns a string representation of this time zone.
`boolean`	`useDaylightTime()` Queries if this time zone uses daylight saving time.

Inherited methods

From class


  
    java.util.TimeZone

`Object`	`clone()` Creates a copy of this `TimeZone`.
`static String[]`	`getAvailableIDs()` Gets all the available IDs supported.
`static String[]`	`getAvailableIDs(int rawOffset)` Gets the available IDs according to the given time zone offset in milliseconds.
`int`	`getDSTSavings()` Returns the amount of time to be added to local standard time to get local wall clock time.
`static TimeZone`	`getDefault()` Gets the default `TimeZone` for this host.
`String`	`getDisplayName(boolean daylightTime, int style, Locale locale)` Returns the `short` or `long` name of this time zone with either standard or daylight time, as written in `locale`.
`final String`	`getDisplayName(Locale locale)` Returns a long standard time name of this `TimeZone` suitable for presentation to the user in the specified `locale`.
`final String`	`getDisplayName(boolean daylight, int style)` Returns a name in the specified `style` of this `TimeZone` suitable for presentation to the user in the default locale.
`final String`	`getDisplayName()` Returns a long standard time name of this `TimeZone` suitable for presentation to the user in the default locale.
`String`	`getID()` Gets the ID of this time zone.
`int`	`getOffset(long date)` Returns the offset of this time zone from UTC at the specified date.
`abstract int`	`getOffset(int era, int year, int month, int day, int dayOfWeek, int milliseconds)` Gets the time zone offset, for current date, modified in case of daylight savings.
`abstract int`	`getRawOffset()` Returns the amount of time in milliseconds to add to UTC to get standard time in this time zone.
`static TimeZone`	`getTimeZone(String id)` Gets the `TimeZone` for the given ID.
`boolean`	`hasSameRules(TimeZone other)` Returns true if this zone has the same rule and offset as another zone.
`abstract boolean`	`inDaylightTime(Date date)` Queries if the given `date` is in Daylight Saving Time in this time zone.
`boolean`	`observesDaylightTime()` Returns `true` if this `TimeZone` is currently in Daylight Saving Time, or if a transition from Standard Time to Daylight Saving Time occurs at any future time.
`static void`	`setDefault(TimeZone timeZone)` Sets the `TimeZone` that is returned by the `getDefault` method.
`void`	`setID(String ID)` Sets the time zone ID.
`abstract void`	`setRawOffset(int offsetMillis)` Sets the base time zone offset to GMT.
`abstract boolean`	`useDaylightTime()` Queries if this `TimeZone` uses Daylight Saving Time.

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Constants

STANDARD_TIME

Added in API level 1

int STANDARD_TIME

Constant for a mode of start or end time specified as standard time.

Constant Value: 1 (0x00000001)

UTC_TIME

Added in API level 1

int UTC_TIME

Constant for a mode of start or end time specified as UTC. European Union rules are specified as UTC time, for example.

Constant Value: 2 (0x00000002)

WALL_TIME

Added in API level 1

int WALL_TIME

Constant for a mode of start or end time specified as wall clock time. Wall clock time is standard time for the onset rule, and daylight time for the end rule.

Constant Value: 0 (0x00000000)

Public constructors

SimpleTimeZone

Added in API level 1

SimpleTimeZone (int rawOffset, 
                String ID)

Constructs a SimpleTimeZone with the given base time zone offset from GMT and time zone ID with no daylight saving time schedule.

Parameters
`rawOffset`	`int`: The base time zone offset in milliseconds to GMT.
`ID`	`String`: The time zone name that is given to this instance.

SimpleTimeZone

Added in API level 1

SimpleTimeZone (int rawOffset, 
                String ID, 
                int startMonth, 
                int startDay, 
                int startDayOfWeek, 
                int startTime, 
                int endMonth, 
                int endDay, 
                int endDayOfWeek, 
                int endTime)

Constructs a SimpleTimeZone with the given base time zone offset from GMT, time zone ID, and rules for starting and ending the daylight time. Both startTime and endTime are specified to be represented in the wall clock time. The amount of daylight saving is assumed to be 3600000 milliseconds (i.e., one hour). This constructor is equivalent to:


     SimpleTimeZone(rawOffset,
                    ID,
                    startMonth,
                    startDay,
                    startDayOfWeek,
                    startTime,
                    SimpleTimeZone.WALL_TIME,
                    endMonth,
                    endDay,
                    endDayOfWeek,
                    endTime,
                    SimpleTimeZone.WALL_TIME,
                    3600000)

Parameters
`rawOffset`	`int`: The given base time zone offset from GMT.
`ID`	`String`: The time zone ID which is given to this object.
`startMonth`	`int`: The daylight saving time starting month. Month is a `MONTH` field value (0-based. e.g., 0 for January).
`startDay`	`int`: The day of the month on which the daylight saving time starts. See the class description for the special cases of this parameter.
`startDayOfWeek`	`int`: The daylight saving time starting day-of-week. See the class description for the special cases of this parameter.
`startTime`	`int`: The daylight saving time starting time in local wall clock time (in milliseconds within the day), which is local standard time in this case.
`endMonth`	`int`: The daylight saving time ending month. Month is a `MONTH` field value (0-based. e.g., 9 for October).
`endDay`	`int`: The day of the month on which the daylight saving time ends. See the class description for the special cases of this parameter.
`endDayOfWeek`	`int`: The daylight saving time ending day-of-week. See the class description for the special cases of this parameter.
`endTime`	`int`: The daylight saving ending time in local wall clock time, (in milliseconds within the day) which is local daylight time in this case.

Throws
`IllegalArgumentException`	if the month, day, dayOfWeek, or time parameters are out of range for the start or end rule

SimpleTimeZone

Added in API level 1

SimpleTimeZone (int rawOffset, 
                String ID, 
                int startMonth, 
                int startDay, 
                int startDayOfWeek, 
                int startTime, 
                int endMonth, 
                int endDay, 
                int endDayOfWeek, 
                int endTime, 
                int dstSavings)

Constructs a SimpleTimeZone with the given base time zone offset from GMT, time zone ID, and rules for starting and ending the daylight time. Both startTime and endTime are assumed to be represented in the wall clock time. This constructor is equivalent to:


     SimpleTimeZone(rawOffset,
                    ID,
                    startMonth,
                    startDay,
                    startDayOfWeek,
                    startTime,
                    SimpleTimeZone.WALL_TIME,
                    endMonth,
                    endDay,
                    endDayOfWeek,
                    endTime,
                    SimpleTimeZone.WALL_TIME,
                    dstSavings)

Parameters
`rawOffset`	`int`: The given base time zone offset from GMT.
`ID`	`String`: The time zone ID which is given to this object.
`startMonth`	`int`: The daylight saving time starting month. Month is a `MONTH` field value (0-based. e.g., 0 for January).
`startDay`	`int`: The day of the month on which the daylight saving time starts. See the class description for the special cases of this parameter.
`startDayOfWeek`	`int`: The daylight saving time starting day-of-week. See the class description for the special cases of this parameter.
`startTime`	`int`: The daylight saving time starting time in local wall clock time, which is local standard time in this case.
`endMonth`	`int`: The daylight saving time ending month. Month is a `MONTH` field value (0-based. e.g., 9 for October).
`endDay`	`int`: The day of the month on which the daylight saving time ends. See the class description for the special cases of this parameter.
`endDayOfWeek`	`int`: The daylight saving time ending day-of-week. See the class description for the special cases of this parameter.
`endTime`	`int`: The daylight saving ending time in local wall clock time, which is local daylight time in this case.
`dstSavings`	`int`: The amount of time in milliseconds saved during daylight saving time.

Throws
`IllegalArgumentException`	if the month, day, dayOfWeek, or time parameters are out of range for the start or end rule

SimpleTimeZone

Added in API level 1

SimpleTimeZone (int rawOffset, 
                String ID, 
                int startMonth, 
                int startDay, 
                int startDayOfWeek, 
                int startTime, 
                int startTimeMode, 
                int endMonth, 
                int endDay, 
                int endDayOfWeek, 
                int endTime, 
                int endTimeMode, 
                int dstSavings)

Constructs a SimpleTimeZone with the given base time zone offset from GMT, time zone ID, and rules for starting and ending the daylight time. This constructor takes the full set of the start and end rules parameters, including modes of startTime and endTime. The mode specifies either wall time or standard time or UTC time.

Parameters
`rawOffset`	`int`: The given base time zone offset from GMT.
`ID`	`String`: The time zone ID which is given to this object.
`startMonth`	`int`: The daylight saving time starting month. Month is a `MONTH` field value (0-based. e.g., 0 for January).
`startDay`	`int`: The day of the month on which the daylight saving time starts. See the class description for the special cases of this parameter.
`startDayOfWeek`	`int`: The daylight saving time starting day-of-week. See the class description for the special cases of this parameter.
`startTime`	`int`: The daylight saving time starting time in the time mode specified by `startTimeMode`.
`startTimeMode`	`int`: The mode of the start time specified by startTime.
`endMonth`	`int`: The daylight saving time ending month. Month is a `MONTH` field value (0-based. e.g., 9 for October).
`endDay`	`int`: The day of the month on which the daylight saving time ends. See the class description for the special cases of this parameter.
`endDayOfWeek`	`int`: The daylight saving time ending day-of-week. See the class description for the special cases of this parameter.
`endTime`	`int`: The daylight saving ending time in time time mode specified by `endTimeMode`.
`endTimeMode`	`int`: The mode of the end time specified by endTime
`dstSavings`	`int`: The amount of time in milliseconds saved during daylight saving time.

Throws
`IllegalArgumentException`	if the month, day, dayOfWeek, time more, or time parameters are out of range for the start or end rule, or if a time mode value is invalid.

See also:

Public methods

clone

Added in API level 1

Object clone ()

Returns a clone of this SimpleTimeZone instance.

Returns
`Object`	a clone of this instance.

equals

Added in API level 1

boolean equals (Object obj)

Compares the equality of two SimpleTimeZone objects.

Parameters
`obj`	`Object`: The `SimpleTimeZone` object to be compared with.

Returns
`boolean`	True if the given `obj` is the same as this `SimpleTimeZone` object; false otherwise.

getDSTSavings

Added in API level 1

int getDSTSavings ()

Returns the amount of time in milliseconds that the clock is advanced during daylight saving time.

Returns
`int`	the number of milliseconds the time is advanced with respect to standard time when the daylight saving rules are in effect, or 0 (zero) if this time zone doesn't observe daylight saving time.

See also:

setDSTSavings(int)

getOffset

Added in API level 1

int getOffset (long date)

Returns the offset of this time zone from UTC at the given time. If daylight saving time is in effect at the given time, the offset value is adjusted with the amount of daylight saving.

Parameters
`date`	`long`: the time at which the time zone offset is found

Returns
`int`	the amount of time in milliseconds to add to UTC to get local time.

getOffset

Added in API level 1

int getOffset (int era, 
                int year, 
                int month, 
                int day, 
                int dayOfWeek, 
                int millis)

Returns the difference in milliseconds between local time and UTC, taking into account both the raw offset and the effect of daylight saving, for the specified date and time. This method assumes that the start and end month are distinct. It also uses a default GregorianCalendar object as its underlying calendar, such as for determining leap years. Do not use the result of this method with a calendar other than a default GregorianCalendar.

Note: In general, clients should use Calendar.get(ZONE_OFFSET) + Calendar.get(DST_OFFSET) instead of calling this method.

Parameters
`era`	`int`: The era of the given date.
`year`	`int`: The year in the given date.
`month`	`int`: The month in the given date. Month is 0-based. e.g., 0 for January.
`day`	`int`: The day-in-month of the given date.
`dayOfWeek`	`int`: The day-of-week of the given date.
`millis`	`int`: The milliseconds in day in standard local time.

Returns
`int`	The milliseconds to add to UTC to get local time.

Throws
`IllegalArgumentException`	the `era`, `month`, `day`, `dayOfWeek`, or `millis` parameters are out of range

getRawOffset

Added in API level 1

int getRawOffset ()

Gets the GMT offset for this time zone.

Returns
`int`	the GMT offset value in milliseconds

See also:

setRawOffset(int)

hasSameRules

Added in API level 1

boolean hasSameRules (TimeZone other)

Returns true if this zone has the same rules and offset as another zone.

Parameters
`other`	`TimeZone`: the TimeZone object to be compared with

Returns
`boolean`	`true` if the given zone is a SimpleTimeZone and has the same rules and offset as this one

hashCode

Added in API level 1

int hashCode ()

Generates the hash code for the SimpleDateFormat object.

Returns
`int`	the hash code for this object

inDaylightTime

Added in API level 1

boolean inDaylightTime (Date date)

Queries if the given date is in daylight saving time.

Parameters
`date`	`Date`: the given Date.

Returns
`boolean`	true if daylight saving time is in effective at the given date; false otherwise.

observesDaylightTime

Added in API level 24

boolean observesDaylightTime ()

Returns true if this SimpleTimeZone observes Daylight Saving Time. This method is equivalent to useDaylightTime().

Returns
`boolean`	`true` if this `SimpleTimeZone` observes Daylight Saving Time; `false` otherwise.

setDSTSavings

Added in API level 1

void setDSTSavings (int millisSavedDuringDST)

Sets the amount of time in milliseconds that the clock is advanced during daylight saving time.

Parameters
`millisSavedDuringDST`	`int`: the number of milliseconds the time is advanced with respect to standard time when the daylight saving time rules are in effect. A positive number, typically one hour (3600000).

See also:

getDSTSavings()

setEndRule

Added in API level 1

void setEndRule (int endMonth, 
                int endDay, 
                int endDayOfWeek, 
                int endTime, 
                boolean after)

Sets the daylight saving time end rule to a weekday before or after the given date within a month, e.g., the first Monday on or after the 8th.

Parameters
`endMonth`	`int`: The daylight saving time ending month. Month is a `MONTH` field value (0-based. e.g., 9 for October).
`endDay`	`int`: The day of the month on which the daylight saving time ends.
`endDayOfWeek`	`int`: The daylight saving time ending day-of-week.
`endTime`	`int`: The daylight saving ending time in local wall clock time, (in milliseconds within the day) which is local daylight time in this case.
`after`	`boolean`: If true, this rule selects the first `endDayOfWeek` on or after `endDay`. If false, this rule selects the last `endDayOfWeek` on or before `endDay` of the month.

Throws
`IllegalArgumentException`	the `endMonth`, `endDay`, `endDayOfWeek`, or `endTime` parameters are out of range

setEndRule

Added in API level 1

void setEndRule (int endMonth, 
                int endDay, 
                int endDayOfWeek, 
                int endTime)

Sets the daylight saving time end rule. For example, if daylight saving time ends on the last Sunday in October at 2 am in wall clock time, you can set the end rule by calling: setEndRule(Calendar.OCTOBER, -1, Calendar.SUNDAY, 2*60*60*1000);

Parameters
`endMonth`	`int`: The daylight saving time ending month. Month is a `MONTH` field value (0-based. e.g., 9 for October).
`endDay`	`int`: The day of the month on which the daylight saving time ends. See the class description for the special cases of this parameter.
`endDayOfWeek`	`int`: The daylight saving time ending day-of-week. See the class description for the special cases of this parameter.
`endTime`	`int`: The daylight saving ending time in local wall clock time, (in milliseconds within the day) which is local daylight time in this case.

Throws
`IllegalArgumentException`	if the `endMonth`, `endDay`, `endDayOfWeek`, or `endTime` parameters are out of range

setEndRule

Added in API level 1

void setEndRule (int endMonth, 
                int endDay, 
                int endTime)

Sets the daylight saving time end rule to a fixed date within a month. This method is equivalent to:

setEndRule(endMonth, endDay, 0, endTime)

Parameters
`endMonth`	`int`: The daylight saving time ending month. Month is a `MONTH` field value (0-based. e.g., 9 for October).
`endDay`	`int`: The day of the month on which the daylight saving time ends.
`endTime`	`int`: The daylight saving ending time in local wall clock time, (in milliseconds within the day) which is local daylight time in this case.

Throws
`IllegalArgumentException`	the `endMonth`, `endDay`, or `endTime` parameters are out of range

setRawOffset

Added in API level 1

void setRawOffset (int offsetMillis)

Sets the base time zone offset to GMT. This is the offset to add to UTC to get local time.

Parameters
`offsetMillis`	`int`: the given base time zone offset to GMT.

See also:

getRawOffset()

setStartRule

Added in API level 1

void setStartRule (int startMonth, 
                int startDay, 
                int startDayOfWeek, 
                int startTime)

Sets the daylight saving time start rule. For example, if daylight saving time starts on the first Sunday in April at 2 am in local wall clock time, you can set the start rule by calling:

setStartRule(Calendar.APRIL, 1, Calendar.SUNDAY, 2*60*60*1000);

Parameters
`startMonth`	`int`: The daylight saving time starting month. Month is a `MONTH` field value (0-based. e.g., 0 for January).
`startDay`	`int`: The day of the month on which the daylight saving time starts. See the class description for the special cases of this parameter.
`startDayOfWeek`	`int`: The daylight saving time starting day-of-week. See the class description for the special cases of this parameter.
`startTime`	`int`: The daylight saving time starting time in local wall clock time, which is local standard time in this case.

Throws
`IllegalArgumentException`	if the `startMonth`, `startDay`, `startDayOfWeek`, or `startTime` parameters are out of range

setStartRule

Added in API level 1

void setStartRule (int startMonth, 
                int startDay, 
                int startTime)

Sets the daylight saving time start rule to a fixed date within a month. This method is equivalent to:

setStartRule(startMonth, startDay, 0, startTime)

Parameters
`startMonth`	`int`: The daylight saving time starting month. Month is a `MONTH` field value (0-based. e.g., 0 for January).
`startDay`	`int`: The day of the month on which the daylight saving time starts.
`startTime`	`int`: The daylight saving time starting time in local wall clock time, which is local standard time in this case. See the class description for the special cases of this parameter.

Throws
`IllegalArgumentException`	if the `startMonth`, `startDayOfMonth`, or `startTime` parameters are out of range

setStartRule

Added in API level 1

void setStartRule (int startMonth, 
                int startDay, 
                int startDayOfWeek, 
                int startTime, 
                boolean after)

Sets the daylight saving time start rule to a weekday before or after the given date within a month, e.g., the first Monday on or after the 8th.

Parameters
`startMonth`	`int`: The daylight saving time starting month. Month is a `MONTH` field value (0-based. e.g., 0 for January).
`startDay`	`int`: The day of the month on which the daylight saving time starts.
`startDayOfWeek`	`int`: The daylight saving time starting day-of-week.
`startTime`	`int`: The daylight saving time starting time in local wall clock time, which is local standard time in this case.
`after`	`boolean`: If true, this rule selects the first `dayOfWeek` on or after `dayOfMonth`. If false, this rule selects the last `dayOfWeek` on or before `dayOfMonth`.

Throws
`IllegalArgumentException`	if the `startMonth`, `startDay`, `startDayOfWeek`, or `startTime` parameters are out of range

setStartYear

Added in API level 1

void setStartYear (int year)

Sets the daylight saving time starting year.

Parameters
`year`	`int`: The daylight saving starting year.

toString

Added in API level 1

String toString ()

Returns a string representation of this time zone.

Returns
`String`	a string representation of this time zone.

useDaylightTime

Added in API level 1

boolean useDaylightTime ()

Queries if this time zone uses daylight saving time.

Returns
`boolean`	true if this time zone uses daylight saving time; false otherwise.