Customizing Resource Bundle Loading : ResourceBundle « JDK 6 « Java

Home
Java
1.2D Graphics GUI
2.3D
3.Advanced Graphics
4.Ant
5.Apache Common
6.Chart
7.Class
8.Collections Data Structure
9.Data Type
10.Database SQL JDBC
11.Design Pattern
12.Development Class
13.EJB3
14.Email
15.Event
16.File Input Output
17.Game
18.Generics
19.GWT
20.Hibernate
21.I18N
22.J2EE
23.J2ME
24.JavaFX
25.JDK 6
26.JDK 7
27.JNDI LDAP
28.JPA
29.JSP
30.JSTL
31.Language Basics
32.Network Protocol
33.PDF RTF
34.Reflection
35.Regular Expressions
36.Scripting
37.Security
38.Servlets
39.Spring
40.Swing Components
41.Swing JFC
42.SWT JFace Eclipse
43.Threads
44.Tiny Application
45.Velocity
46.Web Services SOA
47.XML
Java » JDK 6 » ResourceBundle 




Customizing Resource Bundle Loading
 

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 reloadthrows 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 streamthrows 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.com/dtd/properties.dtd</codeTitle><cnTitle></cnTitle><codeKeywords></codeKeywords><codeComments></codeComments>
<properties>
  <entry key="Key</codeTitle><cnTitle></cnTitle><codeKeywords></codeKeywords><codeComments></codeComments>Value</entry>
</properties>

        














Related examples in the same category
1.Using the JDK 6 ResourceBundle class
2.XML resource bundle
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.