class TestInstance {
    public static void main(String[] args) {
        Super[] supre = new Super[2];
        supre[0] = new Sub1("Sub1");
        supre[1] = new Sub2("Sub2");

        for (Super instans : supre) {
            System.out.println(instans);

            if (instans instanceof Sub1) {
                Sub1 castet = (Sub1) instans;
                System.out.println(castet.tall1);
            }
        }
    }
}