Java/JDK 6/ResourceBundle

Customizing Resource Bundle Loading

   <source lang="java">

import java.io.BufferedInputStream; import java.io.IOException; import java.io.InputStream; import java.net.URL; import java.net.URLConnection; import java.util.Collections; import java.util.Enumeration; import java.util.List; import java.util.Locale; import java.util.Properties; import java.util.ResourceBundle; import java.util.Set; public class XMLResourceBundleControl extends ResourceBundle.Control {

 private static String XML = "xml";
 public List<String> getFormats(String baseName) {
   return Collections.singletonList(XML);
 }
 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)) {
     return null;
   }
   String bundleName = toBundleName(baseName, locale);
   String resourceName = toResourceName(bundleName, format);
   URL url = loader.getResource(resourceName);
   if (url == null) {
     return null;
   }
   URLConnection connection = url.openConnection();
   if (connection == null) {
     return null;
   }
   if (reload) {
     connection.setUseCaches(false);
   }
   InputStream stream = connection.getInputStream();
   if (stream == null) {
     return null;
   }
   BufferedInputStream bis = new BufferedInputStream(stream);
   bundle = new XMLResourceBundle(bis);
   bis.close();
   return bundle;
 }
 public static void main(String args[]) {
   ResourceBundle bundle = ResourceBundle.getBundle("Strings", new XMLResourceBundleControl());
   String string = bundle.getString("Key");
   System.out.println("Key: " + string);
 }

} class XMLResourceBundle extends ResourceBundle {

 private Properties props;
 XMLResourceBundle(InputStream stream) throws IOException {
   props = new Properties();
   props.loadFromXML(stream);
 }
 protected Object handleGetObject(String key) {
   return props.getProperty(key);
 }
 public Enumeration<String> getKeys() {
   Set<String> handleKeys = props.stringPropertyNames();
   return Collections.enumeration(handleKeys);
 }

}

The Strings.xml Resource Bundle <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE properties SYSTEM "http://java.sun.ru/dtd/properties.dtd</codeTitle><cnTitle></cnTitle><codeKeywords></codeKeywords><codeComments></codeComments> <properties>

 <entry key="Key</codeTitle><cnTitle></cnTitle><codeKeywords></codeKeywords><codeComments></codeComments>Value</entry>

</properties>

       </source>
   
  
 
  

Using the JDK 6 ResourceBundle class

   <source lang="java">

import java.util.Locale; import java.util.ResourceBundle; import java.util.Set; public class RBPropDemo {

 public static void main(String[] args) {
   ResourceBundle.clearCache();
   String bundleName = "myproj.MyResources";
   ResourceBundle myResources = ResourceBundle.getBundle(bundleName, Locale.GERMAN);
   System.out.println("Key"s values:");
   System.out.println(myResources.getString("okKey"));
   System.out.println(myResources.getString("cancelKey"));
   System.out.println(myResources.getString("submitKey"));
   System.out.println("\nChecking okKey in resource bundle:");
   if (myResources.containsKey("okKey")) {
     System.out.println("okKey exists! " + " Value = " + myResources.getString("okKey"));
   } else {
     System.out.println("The key Doesn"t Exist");
   }
   System.out.println("\nGet a set of keys:");
   Set<String> keySet = myResources.keySet();
   Object[] keys = keySet.toArray();
   for (int i = 0; i < keys.length; i++) {
     System.out.println("Key " + (i + 1) + " = " + keys[i]);
   }
 }

} /* MyResources.properties file okKey = OK cancelKey = Cancel submitKey = Submit

The MyResources_de.properties file cancelKey = Abbrechen

• /

       </source>
   
  
 
  

XML resource bundle

   <source lang="java">

import java.io.BufferedInputStream; import java.io.IOException; import java.io.InputStream; import java.net.URL; import java.net.URLConnection; import java.util.Collections; import java.util.Enumeration; import java.util.List; import java.util.Locale; import java.util.Properties; import java.util.ResourceBundle; import java.util.Set; public class XMLResourceBundleControl extends ResourceBundle.Control {

 private static String XML = "xml";
 public List<String> getFormats(String baseName) {
   return Collections.singletonList(XML);
 }
 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)) {
     return null;
   }
   String bundleName = toBundleName(baseName, locale);
   String resourceName = toResourceName(bundleName, format);
   URL url = loader.getResource(resourceName);
   if (url == null) {
     return null;
   }
   URLConnection connection = url.openConnection();
   if (connection == null) {
     return null;
   }
   if (reload) {
     connection.setUseCaches(false);
   }
   InputStream stream = connection.getInputStream();
   if (stream == null) {
     return null;
   }
   BufferedInputStream bis = new BufferedInputStream(stream);
   bundle = new XMLResourceBundle(bis);
   bis.close();
   return bundle;
 }
 public static void main(String args[]) {
   ResourceBundle bundle = ResourceBundle.getBundle("Strings", new XMLResourceBundleControl());
   String string = bundle.getString("Key");
   System.out.println("Key: " + string);
 }

} class XMLResourceBundle extends ResourceBundle {

 private Properties props;
 XMLResourceBundle(InputStream stream) throws IOException {
   props = new Properties();
   props.loadFromXML(stream);
 }
 protected Object handleGetObject(String key) {
   return props.getProperty(key);
 }
 public Enumeration<String> getKeys() {
   Set<String> handleKeys = props.stringPropertyNames();
   return Collections.enumeration(handleKeys);
 }

}

The Strings.xml Resource Bundle <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE properties SYSTEM "http://java.sun.ru/dtd/properties.dtd</codeTitle><cnTitle></cnTitle><codeKeywords></codeKeywords><codeComments></codeComments> <properties>

 <entry key="Key</codeTitle><cnTitle></cnTitle><codeKeywords></codeKeywords><codeComments></codeComments>Value</entry>

</properties>

       </source>