public int compare_with(Object obj) throws ObjectInvalid {
if (current == null || obj == null) {
throw new ObjectInvalid();
}
check_object(obj);
return ops.key_compare(current.key, ((KeyNode) obj).key);
};
public int compare(Object obj1, Object obj2) throws ObjectInvalid {
if (obj1 == null || obj2 == null) {
throw new ObjectInvalid();
}
check_object(obj1);
check_object(obj2);
return ops.key_compare(((KeyNode) obj1).key, ((KeyNode) obj2).key);
};