Java file based resource bundle : ResourceBundle « I18N « Java Tutorial

1. Java Tutorial
2. I18N
3. ResourceBundle

import java.util.Enumeration;
import java.util.Locale;
import java.util.ResourceBundle;
import java.util.MissingResourceException;

public class HelloResourceBundleExample {

  public static void main(String [] argv) {
    try {
      Locale frenchLocale = new Locale("fr", "FR");
      ResourceBundle rb = ResourceBundle.getBundle("HelloResourceBundle", frenchLocale);

      System.out.println(rb.getString("Hello"));
      System.out.println(rb.getString("Goodbye"));

    } catch (MissingResourceException mre) {
      mre.printStackTrace();
    }
  }
}
import java.util.Enumeration;
import java.util.ResourceBundle;
import java.util.StringTokenizer;

public class HelloResourceBundle extends ResourceBundle {

  private String keys = "Hello Goodbye";

    public Object handleGetObject(String key) {
      if (key.equals("Hello")) return "Hello";
      if (key.equals("Goodbye")) return "Goodbye";

      return null;
    }

    public Enumeration getKeys() {
      StringTokenizer keyTokenizer = new StringTokenizer(keys);

      return keyTokenizer;
    }
}
import java.util.Enumeration;
import java.util.ResourceBundle;
import java.util.StringTokenizer;

public class HelloResourceBundle_fr extends HelloResourceBundle {

  public Object handleGetObject(String key) {
    if (key.equals("Hello")) return "Bonjour";

    return null;
  }
}
import java.util.Enumeration;
import java.util.ResourceBundle;
import java.util.StringTokenizer;

public class HelloResourceBundle_fr_FR extends HelloResourceBundle_fr {

  public Object handleGetObject(String key) {
    if (key.equals("Goodbye")) return "Au Revoir";

    return null;
  }
}