Internationalization in ADF using external resource bundle

In my previous post I explained how we can configure the ListResourceBundle to load property file as resource bundle.

Now we will use same configuration to load locale specific resource bundles.

Step 1 : Define the supported locale in faces-config.xml file.


<locale-config>
      <default-locale>en</default-locale>
      <supported-locale>de</supported-locale>
      <supported-locale>fr</supported-locale>
    </locale-config>
    <resource-bundle>
      <base-name>view.MyResourceBundle</base-name>
      <var>viewcontrollerBundle</var>
 </resource-bundle>

Step 2 : Create a Util class having method such as "readPropertyFile" taking locale String as a parameter

package view.util;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import java.util.Enumeration;
import java.util.Properties;

public class Util {


    public static Object[][] readPropertyFile(String locale) {
        Object[][] data = null;
        try {
            StringBuilder buffer = new StringBuilder();
            buffer.append("C:\\Users\\Gopal\\Desktop\\resource bundle\\MyResourceBundle");
            if (null != locale) {
                buffer.append(locale);
            }
            buffer.append(".properties");
            String nodeProFile = buffer.toString();
            System.out.println("nodeProFile : " + nodeProFile);
            Properties prop = new Properties();
            //load a properties file
            prop.load(new FileInputStream(nodeProFile));
            Enumeration enuKeys = prop.keys();
            System.out.println("Property size : " + prop.size());
            data = new Object[prop.size()][2];
            int i = 0;
            while (enuKeys.hasMoreElements()) {
                String key = (String)enuKeys.nextElement();
                String value = prop.getProperty(key);
                System.out.println("Key  " + key + " -> : " + value);
                data[i][0] = key;
                data[i][1] = value;
                i++;
            }
        } catch (FileNotFoundException fnfe) {
            fnfe.printStackTrace();
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }
        return data;
    }


}

Step 3 : Create Java Classes extends ListResourceBundle with naming convention as per the locale defined in faces-config.xml file e.g:



Sample source code :

MyResourceBundle.java

package view;

import java.util.ListResourceBundle;
import view.util.Util;

public class MyResourceBundle extends ListResourceBundle {

    static final Object[][] contents = Util.readPropertyFile(null);

    public Object[][] getContents() {
        return contents;
    }
}

MyResourceBundle_de.java

package view;

import java.util.ListResourceBundle;
import view.util.Util;

public class MyResourceBundle_de extends ListResourceBundle {
    static final Object[][] contents = Util.readPropertyFile("_de");
    public Object[][] getContents() {
        return contents;
    }
}

Step 4 : Testing using Test.jspx page.

 Basic source code :

<af:panelGroupLayout id="pgl0">
              <af:outputText value="#{viewcontrollerBundle.HELLO_WORLD}" id="ot1"/>
 </af:panelGroupLayout>

Demo using mozilla :

Setting en  [English] locale :











Changing locale to fr [French] and reload the page :










 

*Comments and feedback are most welcomed, Thanks.