| /* |
| * Copyright (c) 2005, 2012, 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.Arrays; |
| import java.util.Currency; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.ResourceBundle.Control; |
| |
| /** |
| * An abstract class for service providers that |
| * provide localized currency symbols and display names for the |
| * {@link java.util.Currency Currency} class. |
| * Note that currency symbols are considered names when determining |
| * behaviors described in the |
| * {@link java.util.spi.LocaleServiceProvider LocaleServiceProvider} |
| * specification. |
| * |
| * @since 1.6 |
| */ |
| public abstract class CurrencyNameProvider extends LocaleServiceProvider { |
| |
| /** |
| * Sole constructor. (For invocation by subclass constructors, typically |
| * implicit.) |
| */ |
| protected CurrencyNameProvider() { |
| } |
| |
| /** |
| * Gets the symbol of the given currency code for the specified locale. |
| * For example, for "USD" (US Dollar), the symbol is "$" if the specified |
| * locale is the US, while for other locales it may be "US$". If no |
| * symbol can be determined, null should be returned. |
| * |
| * @param currencyCode the ISO 4217 currency code, which |
| * consists of three upper-case letters between 'A' (U+0041) and |
| * 'Z' (U+005A) |
| * @param locale the desired locale |
| * @return the symbol of the given currency code for the specified locale, or null if |
| * the symbol is not available for the locale |
| * @exception NullPointerException if <code>currencyCode</code> or |
| * <code>locale</code> is null |
| * @exception IllegalArgumentException if <code>currencyCode</code> is not in |
| * the form of three upper-case letters, or <code>locale</code> isn't |
| * one of the locales returned from |
| * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() |
| * getAvailableLocales()}. |
| * @see java.util.Currency#getSymbol(java.util.Locale) |
| */ |
| public abstract String getSymbol(String currencyCode, Locale locale); |
| |
| /** |
| * Returns a name for the currency that is appropriate for display to the |
| * user. The default implementation returns null. |
| * |
| * @param currencyCode the ISO 4217 currency code, which |
| * consists of three upper-case letters between 'A' (U+0041) and |
| * 'Z' (U+005A) |
| * @param locale the desired locale |
| * @return the name for the currency that is appropriate for display to the |
| * user, or null if the name is not available for the locale |
| * @exception IllegalArgumentException if <code>currencyCode</code> is not in |
| * the form of three upper-case letters, or <code>locale</code> isn't |
| * one of the locales returned from |
| * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() |
| * getAvailableLocales()}. |
| * @exception NullPointerException if <code>currencyCode</code> or |
| * <code>locale</code> is <code>null</code> |
| * @since 1.7 |
| */ |
| public String getDisplayName(String currencyCode, Locale locale) { |
| if (currencyCode == null || locale == null) { |
| throw new NullPointerException(); |
| } |
| |
| // Check whether the currencyCode is valid |
| char[] charray = currencyCode.toCharArray(); |
| if (charray.length != 3) { |
| throw new IllegalArgumentException("The currencyCode is not in the form of three upper-case letters."); |
| } |
| for (char c : charray) { |
| if (c < 'A' || c > 'Z') { |
| throw new IllegalArgumentException("The currencyCode is not in the form of three upper-case letters."); |
| } |
| } |
| |
| // Check whether the locale is valid |
| Control c = Control.getNoFallbackControl(Control.FORMAT_DEFAULT); |
| for (Locale l : getAvailableLocales()) { |
| if (c.getCandidateLocales("", l).contains(locale)) { |
| return null; |
| } |
| } |
| |
| throw new IllegalArgumentException("The locale is not available"); |
| } |
| } |