java.util
Class TimeZone

java.lang.Object
  |
  +--java.util.TimeZone

Direct Known Subclasses:

ComplexTimeZone, SimpleTimeZone

public abstract class TimeZone

extends Object

Field Summary

protected static java.lang.String	GMT GMT timezone name
protected static java.lang.String[]	VALID_TZ Valid timezones

Constructor Summary

TimeZone()
Create a new timezone

Method Summary

static java.lang.String[]	getAvailableIDs() Get the available TimeZone IDs
static TimeZone	getDefault() Get the default time zone
abstract java.lang.String	getID() Get the ID of this time zone
abstract int	getOffset(int era, int year, int month, int day, int dayOfWeek, int millis) Get the offset to add to GMT to get the local time.
abstract int	getRawOffset() Get the raw offset for this time zone
static TimeZone	getTimeZone(java.lang.String ID) Get the time zone for a given ID
abstract boolean	useDaylightTime() Does this time zone use daylight time

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

GMT

protected static final java.lang.String GMT

GMT timezone name

See Also:

Constant Field Values

VALID_TZ

protected static final java.lang.String[] VALID_TZ

Valid timezones

Constructor Detail

TimeZone

public TimeZone()

Create a new timezone

Method Detail

getAvailableIDs

public static java.lang.String[] getAvailableIDs()

Get the available TimeZone IDs

Returns:

an array of TimeZone IDs

getDefault

public static TimeZone getDefault()

Get the default time zone

Returns:

the default time zone

getID

public abstract java.lang.String getID()

Get the ID of this time zone

Returns:

the ID

getOffset

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

Get the offset to add to GMT to get the local time.

Parameters:

era - The era of the date (0 = BC, 1 = AD)

year - The year of the given date

month - The month of the given date

day - The day of the month of the given date

dayOfWeek - The day of the week of the given date

millis - The milliseconds in the day in standard local time

Returns:

The offset to add to GMT to get local time

Throws:

IllegalArgumentException - if any of the parameters are out of range

getRawOffset

public abstract int getRawOffset()

Get the raw offset for this time zone

Returns:

the GMT offset for this time zone

getTimeZone

public static TimeZone getTimeZone(java.lang.String ID)

Get the time zone for a given ID

Parameters:

ID - the time zone string

Returns:

the TimeZone

useDaylightTime

public abstract boolean useDaylightTime()

Does this time zone use daylight time

Returns:

true if it does