Change the language of a text field

Question

Hello to everyone, maybe you can help me.
I have a JTextFields which each one of them should have a different default language (english or hebrew).
How can I determine the default language of the JTextField.
I tried to do it using the class Robot but it isn't good enough because I can't find the current language. I tried to find the current displayed language using Locale but it didn't help. I also tried to write a character using the class Robot and then anlyse it but it also didn't help.
What can I do?
Is there a solution for this problem?
Does someone have any other ideas?

Answer 1

Java cannot translate the language for you. You have to provide a properties file for the Language.
For example, if you are in France, your locale is French.
Try this code.
languageManager.java
import java.util.*;
public class LanguageManager {
   private static final String BUNDLE = "conf.lang_IDE";
   public static LanguageResourceBundle getLanguage(UserPreferences userPref) {
      try {
      Locale locale = new Locale(userPref.getLanguage(), userPref.getCountry(), userPref.getVariant());
      ResourceBundle resource = ResourceBundle.getBundle(BUNDLE, locale);
      return (new LanguageResourceBundle(resource));
      } catch (IOException e) {
      ErrorDialog error = new ErrorDialog("Cannot Read the Language File", JOptionPane.ERROR_MESSAGE, "ERROR");
      return null;
LanguageResourceBundle.java
public class LanguageResourceBundle {
   private ResourceBundle resource = null;
   public LanguageResourceBundle(ResourceBundle resource) throws IOException {
      this.resource = resource;
   public String getString(String property) {
      return (resource.getString(property));
UserPreferences.java
public class UserPreferences {
   private String language;
   private String country;
   private String variant;
   public static String selectedLanguage;
   public static String selectedCountry;
    * Constructor, set the language, country and variant
   public UserPreferences() {
      setLanguage(getLanguageCode(selectedLanguage));
      setCountry(getCountryCode(selectedCountry));
      setVariant("");
    * Sets the Language
    * @param lang Language (in String) to be set
   public void setLanguage(String lang) {
      this.language = lang;
    * Returns the Language
    * @return Language
   public String getLanguage() {
      return language;
    * Sets the Country
    * @param country Country (in String) to be set
   public void setCountry(String country) {
      this.country = country;
    * Returns the Country
    * @return Country Code
   public String getCountry() {
      return country;
    * Sets the Variant
    * @param var Variant to be set
   public void setVariant(String var) {
      this.variant = var;
    * Get the Variant
    * @return Variant
   public String getVariant() {
      return variant;
}And your proprties file is some thing like this
lang.properties
MENU_FILE=File
MENU_FILE_NEW=New
MENU_FILE_OPEN=Open
So from your class, you use something like this
private LanguageResourceBundle language = LanguageManager.getLanguage(new UserPreferences());
menu1.setText(language.getString(MENU_FILE));This is how Language Resource Bundle works.
If your locale is french and you provide a proeprty file named lang_fr_FR.properties with French for example
MENU_FILE=Dossier
MENU_FILE_NEW=Nouveau
MENU_FILE_OPEN=Ouvert
then java picks the French file. and displays everything in French.
HTH