With this example we are going to demonstrate how to use the ResourceBundle for I18N messages. ResourceBundle can be used to provide us with locale-specific resources. In short, to use the ResourceBundle for I18N messages you should:
- Load resource bundle for locale Locale.US, with the
getBundle(String baseName, Locale locale)API method of the ResourceBundle and then thegetString(String key)API method of the ResourceBundle. - Change the default locale to Greek, with the
setDefault(Locale newLocale)API method of the Locale. - Get the resource bundle for the new locale, with the
getBundle(String baseName)API method and then thegetString(String key)API method of the ResourceBundle.
Let’s take a look at the code snippet that follows:
package com.javacodegeeks.snippets.core;
import java.util.Locale;
import java.util.ResourceBundle;
public class ResourceBundleExample {
public static void main(String[] args) {
// Load resource bundle for locale Locale.US
// ResourceBundle_en_US.properties file will be used
ResourceBundle resourceBundle = ResourceBundle.getBundle("ResourceBundle", Locale.US);
System.out.println("Message in " + Locale.US + " : " + resourceBundle.getString("sayHello"));
// Change the default locale to Greek and get the resource bundle for that locale
// ResourceBundle_el_GR.properties file will be used
Locale.setDefault(new Locale("el", "GR"));
resourceBundle = ResourceBundle.getBundle("ResourceBundle");
System.out.println("Message in " + Locale.getDefault() + " : " + resourceBundle.getString("sayHello"));
}
}
The files used are those shown below :
ResourceBundle_en_US.properties
sayHello=Hello, world!
ResourceBundle_el_GR.properties
sayHello=u0393u03b5u03b9u03b1 u03bau03b1u03b9 u03c7u03b1u03c1u03ac!
Output:
Message in en_US : Hello, world!
Message in el_GR : Γεια και χα�ά!
This was an example of how to use the ResourceBundle for I18N messages in Java.
