[FIXED] Should I use LinkedHashMap or TreeMap if I insert and access in order?

Issue

If i put and iterate in natural order, should I use LinkedHashMap or TreeMap?

I will use a Map<int, MyObj>, and I will put them in natural order (1,2,3,...). I know about their big-O time performances, but I also know that this is a borderline use.

Solution

Use a TreeMap. Not for any performance reasons, but because it can be assigned to SortedMap (or NavigableMap), and that communicates clearly your intent that the map has a defined order.

Answered By - erickson
Answer Checked By - Timothy Miller (JavaFixing Admin)