001    /* NumberFormatProvider.java -- Providers of localized instances
002       Copyright (C) 2007 Free Software Foundation, Inc.
003    
004    This file is part of GNU Classpath.
005    
006    GNU Classpath is free software; you can redistribute it and/or modify
007    it under the terms of the GNU General Public License as published by
008    the Free Software Foundation; either version 2, or (at your option)
009    any later version.
010    
011    GNU Classpath is distributed in the hope that it will be useful, but
012    WITHOUT ANY WARRANTY; without even the implied warranty of
013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014    General Public License for more details.
015    
016    You should have received a copy of the GNU General Public License
017    along with GNU Classpath; see the file COPYING.  If not, write to the
018    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019    02110-1301 USA.
020    
021    Linking this library statically or dynamically with other modules is
022    making a combined work based on this library.  Thus, the terms and
023    conditions of the GNU General Public License cover the whole
024    combination.
025    
026    As a special exception, the copyright holders of this library give you
027    permission to link this library with independent modules to produce an
028    executable, regardless of the license terms of these independent
029    modules, and to copy and distribute the resulting executable under
030    terms of your choice, provided that you also meet, for each linked
031    independent module, the terms and conditions of the license of that
032    module.  An independent module is a module which is not derived from
033    or based on this library.  If you modify this library, you may extend
034    this exception to your version of the library, but you are not
035    obligated to do so.  If you do not wish to do so, delete this
036    exception statement from your version. */
037    
038    package java.text.spi;
039    
040    import java.text.NumberFormat;
041    
042    import java.util.Locale;
043    
044    import java.util.spi.LocaleServiceProvider;
045    
046    /**
047     * A {@link NumberFormatProvider} provides localized
048     * instances of {@link java.text.NumberFormat}.
049     *
050     * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
051     * @since 1.6
052     */
053    public abstract class NumberFormatProvider
054      extends LocaleServiceProvider
055    {
056    
057      /**
058       * Constructs a new {@link NumberFormatProvider}.
059       * Provided for implicit invocation by subclasses.
060       */
061      protected NumberFormatProvider()
062      {
063      }
064    
065      /**
066       * Returns a {@link java.text.NumberFormat} instance
067       * for monetary values in the specified
068       * {@link java.util.Locale}.
069       *
070       * @param locale the desired locale.
071       * @return the localized instance for monetary values.
072       * @throws NullPointerException if the locale is null.
073       * @throws IllegalArgumentException if the locale is not one
074       *                                  returned by
075       *                                  {@link getAvailableLocales()}
076       * @see java.text.NumberFormat#getCurrencyInstance(java.util.Locale)
077       */
078      public abstract NumberFormat getCurrencyInstance(Locale locale);
079    
080      /**
081       * Returns a {@link java.text.NumberFormat} instance
082       * for integers in the specified {@link java.util.Locale}.
083       * The returned instance should be configured to round
084       * floating point numbers to the nearest integer using
085       * {@link java.math.RoundingMode#HALF_EVEN} rounding,
086       * and to parse only the integer part of a number.
087       *
088       * @param locale the desired locale.
089       * @return the localized instance for integers.
090       * @throws NullPointerException if the locale is null.
091       * @throws IllegalArgumentException if the locale is not one
092       *                                  returned by
093       *                                  {@link getAvailableLocales()}
094       * @see java.text.NumberFormat#getIntegerInstance(java.util.Locale)
095       * @see java.math.RoundingMode#HALF_EVEN
096       * @see java.text.NumberFormat#isParseIntegerOnly()
097       */
098      public abstract NumberFormat getIntegerInstance(Locale locale);
099    
100      /**
101       * Returns a general-purpose {@link java.text.NumberFormat}
102       * instance in the specified {@link java.util.Locale}.
103       *
104       * @param locale the desired locale.
105       * @return a general-purpose localized instance.
106       * @throws NullPointerException if the locale is null.
107       * @throws IllegalArgumentException if the locale is not one
108       *                                  returned by
109       *                                  {@link getAvailableLocales()}
110       * @see java.text.NumberFormat#getNumberInstance(java.util.Locale)
111       */
112      public abstract NumberFormat getNumberInstance(Locale locale);
113    
114      /**
115       * Returns a {@link java.text.NumberFormat} instance
116       * for percentage values in the specified
117       * {@link java.util.Locale}.
118       *
119       * @param locale the desired locale.
120       * @return the localized instance for percentage values.
121       * @throws NullPointerException if the locale is null.
122       * @throws IllegalArgumentException if the locale is not one
123       *                                  returned by
124       *                                  {@link getAvailableLocales()}
125       * @see java.text.NumberFormat#getPercentInstance(java.util.Locale)
126       */
127      public abstract NumberFormat getPercentInstance(Locale locale);
128    
129    }