Here's why:
* `ResourceBundle` is a class in Java used for storing and retrieving localized resources. These resources can be text strings (like greetings), images, or other data.
* Subclasses of `ResourceBundle` are used to define specific resource bundles for different locales. You can create separate subclasses for English, Spanish, French, etc., each containing the greetings translated for that language.
* `ResourceBundle.getBundle()` is a static method used to load the appropriate resource bundle based on the current locale.
Example:
```java
// English greetings
public class Greetings_en extends ResourceBundle {
@Override
protected Object handleGetObject(String key) {
if (key.equals("hello")) {
return "Hello!";
} else if (key.equals("goodbye")) {
return "Goodbye!";
}
return null;
}
@Override
public Enumeration return Collections.enumeration(Arrays.asList("hello", "goodbye"));
}
}
// Spanish greetings
public class Greetings_es extends ResourceBundle {
@Override
protected Object handleGetObject(String key) {
if (key.equals("hello")) {
return "¡Hola!";
} else if (key.equals("goodbye")) {
return "¡Adiós!";
}
return null;
}
@Override
public Enumeration return Collections.enumeration(Arrays.asList("hello", "goodbye"));
}
}
// Usage
ResourceBundle greetings = ResourceBundle.getBundle("Greetings", Locale.getDefault());
String hello = (String) greetings.getObject("hello");
System.out.println(hello); // Outputs "Hello!" or "¡Hola!" depending on the locale
```
This example demonstrates how to subclass `ResourceBundle` to create locale-specific greeting bundles. The `getBundle()` method dynamically loads the correct bundle based on the user's current locale.