Java example source code file (XMLResourceBundleTest.java)

This example Java source code file (XMLResourceBundleTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bufferedinputstream, illegalaccessexception, ioexception, locale, net, network, nullpointerexception, override, properties, resourcebundle, runtimeexception, string, urlconnection, util, xml, xmlrb, xmlresourcebundle

The XMLResourceBundleTest.java Java example source code

/*
 * Copyright (c) 2007, 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.
 *
 * 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.
 */
/*
 * @test
 * @bug 5102289 4403721
 * @summary Test XML support as shown in the ResourceBundle.Control description.
 */

import java.io.*;
import java.net.*;
import java.util.*;
import static java.util.ResourceBundle.Control.*;

public class XMLResourceBundleTest {
    public static void main(String[] args) {
        ResourceBundle.Control xmlControl = new ResourceBundle.Control() {
                   @Override
                   public List<String> getFormats(String baseName) {
                       if (baseName == null) {
                           throw new NullPointerException();
                       }
                       return Arrays.asList("xml");
                   }
                   @Override
                   public ResourceBundle newBundle(String baseName, Locale locale,
                                                   String format,
                                                   ClassLoader loader,
                                                   boolean reload)
                       throws IllegalAccessException,
                              InstantiationException, IOException {
                       if (baseName == null || locale == null
                           || format == null || loader == null) {
                           throw new NullPointerException();
                       }
                       ResourceBundle bundle = null;
                       if (format.equals("xml")) {
                           String bundleName = toBundleName(baseName, locale);
                           String resourceName = toResourceName(bundleName, format);
                           URL url = loader.getResource(resourceName);
                           if (url != null) {
                               URLConnection connection = url.openConnection();
                               if (connection != null) {
                                   if (reload) {
                                       // disable caches if reloading
                                       connection.setUseCaches(false);
                                   }
                                   InputStream stream = connection.getInputStream();
                                   if (stream != null) {
                                       BufferedInputStream bis = new BufferedInputStream(stream);
                                       bundle = new XMLResourceBundle(bis);
                                       bis.close();
                                   }
                               }
                           }
                       }
                       return bundle;
                   }
               };
        ResourceBundle rb = ResourceBundle.getBundle("XmlRB", new Locale(""), xmlControl);
        String type = rb.getString("type");
        if (!type.equals("XML")) {
            throw new RuntimeException("Root Locale: type: got " + type
                                       + ", expected XML (ASCII)");
        }

        rb = ResourceBundle.getBundle("XmlRB", Locale.JAPAN, xmlControl);
        type = rb.getString("type");
        // Expect fullwidth "XML"
        if (!type.equals("\uff38\uff2d\uff2c")) {
            throw new RuntimeException("Locale.JAPAN: type: got " + type
                                       + ", expected \uff38\uff2d\uff2c (fullwidth XML)");
        }
    }

    private static class XMLResourceBundle extends ResourceBundle {
        private Properties props;

        XMLResourceBundle(InputStream stream) throws IOException {
            props = new Properties();
            props.loadFromXML(stream);
        }

        protected Object handleGetObject(String key) {
            if (key == null) {
                throw new NullPointerException();
            }
            return props.get(key);
        }

        public Enumeration<String> getKeys() {
            // Not implemented
            return null;
        }
    }
}