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Just use a LinkedHashMap if you wish to have a predictable iteration order.

See LinkedHashMap (Java Platform SE 6)

You can of course also use a TreeMap and create your own Comparator which you...

If I was you I'd just have it in a Map<String, Integer>, that would sort out your issues automatically.

The key in the map would be the URL and the integer is just the number of hits.

After...