Soamid

  public Observable<Photo> searchForPhotos(String searchQuery) {
        return Observable.fromCallable(() -> downloadUrlSource(searchQuery))
                .flatMap(googleSiteSource -> Observable.fromArray(extractPhotoUrls(googleSiteSource).toArray(new String[0])))
                .map(photoUrl -> {
                    try {
                        return getPhoto(photoUrl);
                    } catch (IOException e) {
                        log.log(Level.WARNING, "Could not download a photo", e);
                    }
                    return null; // ???!!!

Soamid

String napis = "abc";
		
char znak = napis.charAt(1);
int kodAscii = (int) znak;
char znowuZnak = (char) kodAscii;
		
System.out.println(kodAscii + " " + znowuZnak);