import java.util.HashMap;
import java.util.ArrayList;

public class Hoved {
    public static void main(String[] args) {
        Katt katt = new Katt("katt", "han");
        Skogkatt sk = new Skogkatt("kattt", "hun");

        System.out.println(katt instanceof Katt); // true 
        System.out.println(katt instanceof Skogkatt); // false 
        System.out.println(sk instanceof Skogkatt); // true 
        System.out.println(sk instanceof Katt); // true
        
        ArrayList<String> list = new ArrayList<>();
        HashMap<Integer, String> hash = new HashMap<>();
        hash.put(1, "one");
        hash.remove(1);

        double flyttall = 3.3;
        int i = (int) flyttall;
        Katt cat = (Katt) sk;
    }
}