RxJava2: Passing Parameter To Observable.create Or fromCallable

public Observable<String[]> splitWords(final String phrase) {    return Observable.fromCallable(new Callable<String[]>() {        @Override        public String[] call() throws Exception {            return phrase.split("\\s+");        }    });}

public Observable<String[]> splitWords(final String phrase) {    return Observable.create(new ObservableOnSubscribe<String[]>() {        @Override        public void subscribe(@NonNull ObservableEmitter<String[]> emitter) throws Exception {            emitter.onNext(phrase.split("\\s+"));            emitter.onComplete();        }    });}