What is rosurcebundle class ?

Resource bundles contain locale-specific objects. When your program needs a locale-specific resource, a String for example, your program can load it from the resource bundle that is appropriate for the current user's locale. In this way, you can write program code that is largely independent of the user's locale isolating most, if not all, of the locale-specific information in resource bundles.
This allows you to write programs that can:
• be easily localized, or translated, into different languages
• handle multiple locales at once
• be easily modified later to support even more locales
Resource bundles contain key/value pairs.
When your program needs a locale-specific object, it loads the ResourceBundle class using the getBundle method:
ResourceBundle myResources =
ResourceBundle.getBundle("MyResources", currentLocale);