Class TimeZoneNameProvider


public abstract class TimeZoneNameProvider
extends LocaleServiceProvider

An abstract class for service providers that provide localized time zone names for the TimeZone class. The localized time zone names available from the implementations of this class are also the source for the DateFormatSymbols.getZoneStrings() method.

Since:
1.6

Constructors

Modifier Constructor and Description
protected TimeZoneNameProvider()

Sole constructor.

Methods

Modifier and Type Method and Description
abstract String getDisplayName(String ID, boolean daylight, int style, Locale locale)

Returns a name for the given time zone ID that's suitable for presentation to the user in the specified locale.
String getGenericDisplayName(String ID, int style, Locale locale)

Returns a generic name for the given time zone ID that's suitable for presentation to the user in the specified locale.

Methods inherited from class java.util.spi.LocaleServiceProvider

getAvailableLocales, isSupportedLocale

Methods inherited from class java.lang.Object

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

Constructors

TimeZoneNameProvider

protected TimeZoneNameProvider()

Sole constructor. (For invocation by subclass constructors, typically implicit.)

Methods

getDisplayName

public abstract String getDisplayName(String ID,
                                      boolean daylight,
                                      int style,
                                      Locale locale)

Returns a name for the given time zone ID that's suitable for presentation to the user in the specified locale. The given time zone ID is "GMT" or one of the names defined using "Zone" entries in the "tz database", a public domain time zone database at ftp://elsie.nci.nih.gov/pub/. The data of this database is contained in a file whose name starts with "tzdata", and the specification of the data format is part of the zic.8 man page, which is contained in a file whose name starts with "tzcode".

If daylight is true, the method should return a name appropriate for daylight saving time even if the specified time zone has not observed daylight saving time in the past.

Parameters:
ID - a time zone ID string
daylight - if true, return the daylight saving name.
style - either TimeZone.LONG or TimeZone.SHORT
locale - the desired locale
Returns:
the human-readable name of the given time zone in the given locale, or null if it's not available.
Throws:
IllegalArgumentException - if style is invalid, or locale isn't one of the locales returned from getAvailableLocales().
NullPointerException - if ID or locale is null
See Also:
TimeZone.getDisplayName(boolean, int, java.util.Locale)

getGenericDisplayName

public String getGenericDisplayName(String ID,
                                    int style,
                                    Locale locale)

Returns a generic name for the given time zone ID that's suitable for presentation to the user in the specified locale. Generic time zone names are neutral from standard time and daylight saving time. For example, "PT" is the short generic name of time zone ID America/Los_Angeles, while its short standard time and daylight saving time names are "PST" and "PDT", respectively. Refer to getDisplayName for valid time zone IDs.

The default implementation of this method returns null.

Parameters:
ID - a time zone ID string
style - either TimeZone.LONG or TimeZone.SHORT
locale - the desired locale
Returns:
the human-readable generic name of the given time zone in the given locale, or null if it's not available.
Throws:
IllegalArgumentException - if style is invalid, or locale isn't one of the locales returned from getAvailableLocales().
NullPointerException - if ID or locale is null
Since:
1.8

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https://docs.oracle.com/javase/8/docs/api/java/util/spi/TimeZoneNameProvider.html