LibraryDI.java

@Module
public class BookFinderModule {
    @Provides
    BookFinder provideBookFinder() {
        return new OxfordBookFinder();
    }
    @Provides
    @LocalFinder  
    BookFinder provideLocalBookFinder() {
        return new LocalLibraryBookFinder();
    }
}

@Component(modules = {BookFinderModule.class})
public interface CommonComponent{
    void inject(Library library);
}

class Library {
    private BookFinder finder;
    
    @Inject
    @LocalFinder  // Qualifier
    private BookFinder localBookFinder
    public static void main(String[] args) {
        CommonComponent component = DaggerComponent.builder().build();
        component.inject(this);
        
        // Both finder and localBookFinder gets initialized 
        // just before it and are ready to use.
    }
    
    @Inject
    public void setBookFinder(BookFinder finder) {
        // whatever we can do here is upto ourselves, Dagger will
        // simply provide us with the requested dependent object
        // here
       this.finder = finder;
    }
}