IAA_2: GreetingsRepository good

GreetingsLanguage.java

public enum GreetingsLanguage {
    FRENCH("Bonjour "),
    ENGLISH("Hello "),
    DUTCH("Hallo ");
 
    private String _greeting;
 
    GreetingsLanguage(String greeting) {
        _greeting = greeting;
    }
 
    public String getGreeting() {
        return _greeting;
    }
}

GreetingsRepository.java

public class GreetingsRepository {
 
    private static final String TAG = "GreetingsRepository";
     
    public String getGreeting(String name, GreetingsLanguage language) throws IllegalArgumentException {
        if (name == null || name.equals("")) {
            final String err = "name: " + name + " is invalid!";
            Log.e(TAG, err);
            throw new IllegalArgumentException(err);
        }
        return language.getGreeting() + name + "!";
    }
}