Use @PostConstruct annotation that allows to make a necessary load embracing Spring bean model. Method under @PostConstruct executes once in a bean life time.

@Slf4j
@Component
public class PokemonViewToPokemonEntityConverter implements Converter<PokemonView, PokemonEntity> {

    private HashMap<String, Integer> pokemonTypes;

    @PostConstruct
    private void init() {
      pokemonTypes = myDbService.load();
    }

    // ...
}

Source:

• https://docs.spring.io/spring-framework/reference/core/beans/annotation-config/postconstruct-and-predestroy-annotations.html.