import java.util.Collections;
import java.util.ArrayList;

public class TestPerson {

    public static void main(String[] args) {
        Person p1 = new Person("A", 80);
        Person p2 = new Person("B", 20);
        Person p3 = new Person("C", 50);
        Person p4 = new Person("D", 40);

        ArrayList<Person> personer = new ArrayList<>();
        personer.add(p1);
        personer.add(p2);
        personer.add(p3);
        personer.add(p4);

        Collections.sort(personer);

        for (Person person : personer) {
            System.out.println(person.hentNavn());
        }

    }
}