/*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.util.spi;
import java.util.Locale;
/**
* An abstract class for service providers that
* provide localized time zone names for the
* {@link java.util.TimeZone TimeZone} class.
* The localized time zone names available from the implementations of
* this class are also the source for the
* {@link java.text.DateFormatSymbols#getZoneStrings()
* DateFormatSymbols.getZoneStrings()} method.
*
* @since 1.6
*/
public abstract class TimeZoneNameProvider extends LocaleServiceProvider {
/**
* Sole constructor. (For invocation by subclass constructors, typically
* implicit.)
*/
protected TimeZoneNameProvider() {
}
/**
* 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
* <a href="ftp://elsie.nci.nih.gov/pub/">ftp://elsie.nci.nih.gov/pub/</a>.
* 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".
* <p>
* If <code>daylight</code> 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.
*
* @param ID a time zone ID string
* @param daylight if true, return the daylight saving name.
* @param style either {@link java.util.TimeZone#LONG TimeZone.LONG} or
* {@link java.util.TimeZone#SHORT TimeZone.SHORT}
* @param locale the desired locale
* @return the human-readable name of the given time zone in the
* given locale, or null if it's not available.
* @exception IllegalArgumentException if <code>style</code> is invalid,
* or <code>locale</code> isn't one of the locales returned from
* {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
* getAvailableLocales()}.
* @exception NullPointerException if <code>ID</code> or <code>locale</code>
* is null
* @see java.util.TimeZone#getDisplayName(boolean, int, java.util.Locale)
*/
public abstract String getDisplayName(String ID, boolean daylight, int style, Locale locale);
}