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java.lang.Object | +--java.util.TimeZone
TimeZone
represents a time zone offset, and also figures out daylight
savings.
Typically, you get a TimeZone
using getDefault
which creates a TimeZone
based on the time zone where the program
is running. For example, for a program running in Japan, getDefault
creates a TimeZone
object based on Japanese Standard Time.
You can also get a TimeZone
using getTimeZone
along
with a time zone ID. For instance, the time zone ID for the Pacific
Standard Time zone is "PST". So, you can get a PST TimeZone
object
with:
TimeZone tz = TimeZone.getTimeZone("PST");
This class is a pure subset of the java.util.TimeZone class in J2SE.
The only time zone ID that is required to be supported is "GMT".
Apart from the methods and variables being subset, the semantics of the getTimeZone() method may also be subset: custom IDs such as "GMT-8:00" are not required to be supported.
Calendar
Constructor Summary | |
TimeZone()
|
Method Summary | |
static String[] |
getAvailableIDs()
Gets all the available IDs supported. |
static TimeZone |
getDefault()
Gets the default TimeZone for this host. |
String |
getID()
Gets the ID of this time zone. |
abstract int |
getOffset(int era,
int year,
int month,
int day,
int dayOfWeek,
int millis)
Gets offset, for current date, modified in case of daylight savings. |
abstract int |
getRawOffset()
Gets the GMT offset for this time zone. |
static TimeZone |
getTimeZone(String ID)
Gets the TimeZone for the given ID. |
abstract boolean |
useDaylightTime()
Queries if this time zone uses Daylight Savings Time. |
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public TimeZone()
Method Detail |
public abstract int getOffset(int era, int year, int month, int day, int dayOfWeek, int millis)
era
- The era of the given date (0 = BC, 1 = AD).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.IllegalArgumentException
- the era, month, day,
dayOfWeek, or millis parameters are out of rangepublic abstract int getRawOffset()
public abstract boolean useDaylightTime()
public String getID()
public static TimeZone getTimeZone(String ID)
TimeZone
for the given ID.ID
- the ID for a TimeZone
, either an abbreviation such as
"GMT", or a full name such as "America/Los_Angeles".
The only time zone ID that is required to be supported is "GMT".
public static TimeZone getDefault()
TimeZone
for this host.
The source of the default TimeZone
may vary with implementation.TimeZone
.public static String[] getAvailableIDs()
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