private static void josBogatiji(String grad) {
        if (grad == null)
            throw new IllegalArgumentException();
        Osoba najbogatija = Osobe.osobeStream(5000)
                .filter(o -> o.getMestoStanovanja().equals(grad))
                .sorted((o1, o2) -> Integer.compare(o2.getPrimanja(), o1.getPrimanja()))
                .findFirst().get();
        Osobe.osobeStream(5000)
            .filter(o -> !o.getMestoStanovanja().equals(grad) && o.getPrimanja() > najbogatija.getPrimanja())
            .forEach(o -> System.out.println(o.getIme() + " " + o.getPrezime() + " " + o.getMestoStanovanja() + " " + o.getPrimanja()));
    }