author | naoto |
Wed, 24 Nov 2010 15:26:41 -0800 | |
changeset 7255 | 88d0a8413bb8 |
parent 5506 | 202f599c92aa |
child 7668 | d4a77089c587 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.util.spi; |
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import java.util.Arrays; |
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import java.util.Currency; |
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import java.util.List; |
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import java.util.Locale; |
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/** |
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* An abstract class for service providers that |
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* provide localized currency symbols and display names for the |
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* {@link java.util.Currency Currency} class. |
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* Note that currency symbols are considered names when determining |
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* behaviors described in the |
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* {@link java.util.spi.LocaleServiceProvider LocaleServiceProvider} |
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* specification. |
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* |
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* @since 1.6 |
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*/ |
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public abstract class CurrencyNameProvider extends LocaleServiceProvider { |
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/** |
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* Sole constructor. (For invocation by subclass constructors, typically |
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* implicit.) |
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*/ |
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protected CurrencyNameProvider() { |
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} |
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/** |
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* Gets the symbol of the given currency code for the specified locale. |
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* For example, for "USD" (US Dollar), the symbol is "$" if the specified |
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* locale is the US, while for other locales it may be "US$". If no |
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* symbol can be determined, null should be returned. |
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* |
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* @param currencyCode the ISO 4217 currency code, which |
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* consists of three upper-case letters between 'A' (U+0041) and |
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* 'Z' (U+005A) |
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* @param locale the desired locale |
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* @return the symbol of the given currency code for the specified locale, or null if |
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* the symbol is not available for the locale |
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* @exception NullPointerException if <code>currencyCode</code> or |
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* <code>locale</code> is null |
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* @exception IllegalArgumentException if <code>currencyCode</code> is not in |
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* the form of three upper-case letters, or <code>locale</code> isn't |
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* one of the locales returned from |
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* {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() |
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* getAvailableLocales()}. |
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* @see java.util.Currency#getSymbol(java.util.Locale) |
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*/ |
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public abstract String getSymbol(String currencyCode, Locale locale); |
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/** |
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* Returns a name for the currency that is appropriate for display to the |
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* user. The default implementation returns null. |
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* |
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* @param currencyCode the ISO 4217 currency code, which |
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* consists of three upper-case letters between 'A' (U+0041) and |
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* 'Z' (U+005A) |
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* @param locale the desired locale |
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* @return the name for the currency that is appropriate for display to the |
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* user, or null if the name is not available for the locale |
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* @exception IllegalArgumentException if <code>currencyCode</code> is not in |
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* the form of three upper-case letters, or <code>locale</code> isn't |
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* one of the locales returned from |
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* {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() |
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* getAvailableLocales()}. |
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* @exception NullPointerException if <code>currencyCode</code> or |
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* <code>locale</code> is <code>null</code> |
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* @since 1.7 |
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*/ |
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public String getDisplayName(String currencyCode, Locale locale) { |
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if (currencyCode == null || locale == null) { |
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throw new NullPointerException(); |
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} |
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// Check whether the currencyCode is valid |
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char[] charray = currencyCode.toCharArray(); |
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if (charray.length != 3) { |
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throw new IllegalArgumentException("The currencyCode is not in the form of three upper-case letters."); |
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} |
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for (char c : charray) { |
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if (c < 'A' || c > 'Z') { |
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throw new IllegalArgumentException("The currencyCode is not in the form of three upper-case letters."); |
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} |
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} |
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// Check whether the locale is valid |
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List<Locale> avail = Arrays.asList(getAvailableLocales()); |
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if (!avail.contains(locale)) { |
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throw new IllegalArgumentException("The locale is not available"); |
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} |
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return null; |
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} |
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} |