CS 535: Object-Oriented Programming & Design

1. References
2. Internationalization
   1. Formatting
      1. Languages and Countries Available in JDK1.1.3
   2. Static and Dynamic Text
   3. Internationalization of Text
      1. Hello World Example with Just Classes
      2. Hello World Example - Using Files
      3. A More Complex Example

Doc 19, Internationalization Slide # 1

10/13/97

13/10/97

13.10.97

1,234.56

1.234,56

1;234.56

Doc 19, Internationalization Slide # 2

Doc 19, Internationalization Slide # 3

Locale(String language, String country)

Locale(String language, String country, String variant)

Doc 19, Internationalization Slide # 4

Doc 19, Internationalization Slide # 5

class FormatUsingLocalRules
   {
   public static void main( String args[] ) throws Exception
      {
      NumberFormat number = NumberFormat.getInstance(  );

      NumberFormat currency = 
            NumberFormat.getCurrencyInstance(  );

      DateFormat shortDate = 
            DateFormat.getDateInstance(DateFormat.SHORT);

      DateFormat fullTime = 
            DateFormat.getTimeInstance(DateFormat.FULL );
      
      System.out.println( "Number: " + number.format( 123456 ));
      System.out.println( "Currency: " + 
                              currency.format( 1234.56 ));
      System.out.println( "ShortDate: " + 
                              shortDate.format( new Date() ));
      System.out.println( "FullTime: " + 
                              fullTime.format( new Date() ));
      }
   }

Doc 19, Internationalization Slide # 6

Use the default give by the VM or

Set the default to what you want

class FormatExplicitlyCallingDifferentLocale
   {
   public static void main( String args[] )
      {
      System.out.println( "-------US English------");
      internationalPrint( Locale.getDefault() );

      System.out.println( "-------Canadian English------");
      internationalPrint( new Locale("en", "CA" ));

      System.out.println( "-------Spanish Spanish------");
      internationalPrint( new Locale("es", "ES" ));

      System.out.println( "-------German German------");
      internationalPrint( new Locale("de", "DE" ));
      }

//internationalPrint on next slide
Doc 19, Internationalization Slide # 7

   public static void internationalPrint( Locale custom )
      {
      NumberFormat number = 
               NumberFormat.getInstance( custom );

      NumberFormat currency = 
               NumberFormat.getCurrencyInstance( custom );

      DateFormat shortDate = DateFormat.getDateInstance(
                            DateFormat.SHORT, custom );

      DateFormat fullDate = DateFormat.getDateInstance( 
                           DateFormat.FULL, custom );

      DateFormat shortTime = DateFormat.getTimeInstance( 
                           DateFormat.SHORT, custom );

      DateFormat longTime = DateFormat.getTimeInstance(
                           DateFormat.LONG,custom );

      System.out.println( "Number: " + 
                        number.format( 123456 ));

      System.out.println( "Currency: " + 
                        currency.format( 1234.56 ));

      System.out.println( "ShortDate: " + 
                        shortDate.format( new Date() ));

      System.out.println( "FullDate: " + 
                        fullDate.format( new Date() ));

      System.out.println( "ShortTime: " + 
                        shortTime.format( new Date() ));

      System.out.println( "LongTime: " + 
                        longTime.format( new Date() ));
      }
   }
Doc 19, Internationalization Slide # 8

Doc 19, Internationalization Slide # 9

import java.text.MessageFormat;
import java.util.Date;

class Test
   {
   public static void main( String args[] ) throws Exception
      {
      Object[] dynamicText = {"Roger",new Date() };
      
      String staticText = "{0}, it is {1,time,short}";
      String publicMessage = 
         MessageFormat.format(staticText, dynamicText);
      System.out.println( publicMessage );
      }
   }

Doc 19, Internationalization Slide # 10

Doc 19, Internationalization Slide # 11

import java.util.ResourceBundle;

// The main progam, will display either German, Spanish
// or English depending on where you run the program

class HelloWorld
   {
   public static void main( String args[] )   
      {
      ResourceBundle greetings = 
         ResourceBundle.getBundle( "Greetings" );
      
      System.out.println( greetings.getString( "hello" ));
      }
   }

// The default language, if the local language and/or country 
// can not be found this one will be used
import java.util.ListResourceBundle;

public class Greetings extends ListResourceBundle  
   {
   public Object[][] getContents()  
      {
      return new Object[][] 
         {
            { "hello", "Hello World!" },
            { "language", "English" },
            { "key", "value" } // can have as many pairs as needed
         };
      }
   }

Doc 19, Internationalization Slide # 12

// Append _language code to base class name for a language
// Append _language_country to base class to indicate both 
// langauge and country

// de = 2 letter ISO-639 code for German

public class Greetings_de extends ListResourceBundle 
   {
   public Object[][] getContents()  
      {
      return new Object[][]   
         {
            { "hello", "Hallo, Welt!" },
            { "language", "Deutsch" }
         };
      }
   }

// de = 2 letter ISO-639 code for Spanish
public class Greetings_es extends ListResourceBundle 
   {
   public Object[][] getContents() 
      {
      return new Object[][]   
         {
            { "hello", "\u00A1Hola mundo!" },
            { "language", "Espa\u00F1ol" }
         };
      }
   }

// \u00A1 = inverted !   \u00BF = inverted ?
// \u00D1 = N with a tilde  \u00F1 = n with a tilde
Doc 19, Internationalization Slide # 13

import java.util.Locale;
import java.util.ResourceBundle;

class ThreeHellos
   {
   public static void main( String args[] )
      {
      foreignTest( );

      Locale.setDefault(  new Locale("es", "ES" ));
      foreignTest();

      Locale.setDefault(  new Locale("de", "DE" ));
      foreignTest( );
      }
      
   public static void foreignTest( )
      {
      ResourceBundle greetings = 
                     ResourceBundle.getBundle( "Greetings");
      
      System.out.println( "----" + 
                           greetings.getString( "language") + 
                           "----");

      System.out.println( greetings.getString( "hello" ));
      }
   }

Doc 19, Internationalization Slide # 14

public class Greetings extends ListResourceBundle  
   {
   public Object[][] getContents()  
      {
      return new Object[][] 
         {
            { "hello", "Hello World!" },
            { "language", "English" },
         };
      }
   }

public class Greetings extends ListResourceBundle  
   {
   static final Object[][] contents =
         {
            { "hello", "Hello World!" },
            { "language", "English" },
            { "key", "value" } // can have as many pairs as needed
         };
   public Object[][] getContents()  
      {
      return contents;
      }
   }

Doc 19, Internationalization Slide # 15

Doc 19, Internationalization Slide # 16

# \u00A1 = inverted !   
# \u00BF = inverted ?
# \u00F1 = n with a tilde

Doc 19, Internationalization Slide # 17

import java.text.MessageFormat;
import java.util.Date;
import java.util.Locale;
import java.util.ResourceBundle;
import java.util.ListResourceBundle;

class HelloWithPublicService
   {
   static Object[] dynamicData = {
         System.getProperty( "user.name" ),
         new Date()
         };

   public static void main( String args[] )
      {
      foreignTest( );

      Locale.setDefault(  new Locale("es", "ES" ));
      foreignTest();

      Locale.setDefault(  new Locale("de", "DE" ));
      foreignTest( );
      }
      
Doc 19, Internationalization Slide # 18

   public static void foreignTest( )
      {
      ResourceBundle greetings = 
            ResourceBundle.getBundle( "Greetings");

      MessageFormat publicMessage;
      publicMessage = new MessageFormat(
                              greetings.getString( "publicService"));
      
      System.out.println( "----" + greetings.getString( "language") + 
                           "----");

      System.out.println( greetings.getString( "hello" ));
      System.out.println( publicMessage.format( dynamicData ));
      }
   }

----English----
Hello World!
Roger Whitney, it is 10:11 PM, do you know where your children are?
----Español----
¡Hola mundo!
Roger Whitney, son las 6:11 -- ¿sabes donde estan tus hijos?
----Deutsch----
Hallo, Welt!
Roger Whitney, es ist 06:11. Weisst Du, wo Deine Kinder sind?

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