Question

I would like to be able to change the locale in my Swing application at runtime and have all the text elements on the screen update themselves with localized text from a ResourceBundle of the new locale.

Can this be done without customizing swing components or creating UIDelegates for all components that handle rendering localized text?

If no, then what is a good solution I can consider implementing?

Answer 1

1. You have a method that is used to change app locale (and probably persist the new value) and another one to get localized strings.

2. Create an interface:

   interface LocaleChangeListener {
       void onLocaleChange();
   }
   

   Implement it by UI components that need to be able to change locale at runtime and set the new values in overrides onLocaleChange().

3. Now, have a list of listeners that will be notified on locale change by the first method.