What is resource bundles? Explain the usage of Java resource bundles.A resource bundle is file that has ‘.properties’ extension in Java. It contains the data that is locale specific. Internationalization is utilized by resource bundle in a Java application by making the code independent of locale.
ResourceBundle is used for using with localization. The type of localizable object is of type string. Most resource bundles can persist any Java object. java.util.ResourceBundle.
For creating a concrete class, it must subclass the ResourceBundle class and implement the methods handleGetObjects() and getKeys(). A set of sub classes by name ListResourceBundle and PropertyResourceBundle, allows having concentration on providing the required data for the file which avoids writing code.