package javacodebook.collections.collection.sort;

public class AdressComparator implements java.util.Comparator{

    public int compare(Object o1, Object o2) {
        if(!(o1 instanceof User) || !(o2 instanceof User))
            throw new RuntimeException("Ungültiger Typ für Vergleich");
        User u1 = (User)o1;
        User u2 = (User)o2;
        return u1.getOrt().compareToIgnoreCase(u2.getOrt());
    }

}