sort hashtable by values

Question

If I have a Hashtable and I want to sort it by the value, i.e: integer in a descending order. How can I do this and be able to print through all of the key - value pair?

Answer 1

Transfer as List and sort it:

    public static void sortValue(Hashtable<?, Integer> t){

       //Transfer as List and sort it
       ArrayList<Map.Entry<?, Integer>> l = new ArrayList(t.entrySet());
       Collections.sort(l, new Comparator<Map.Entry<?, Integer>>(){

         public int compare(Map.Entry<?, Integer> o1, Map.Entry<?, Integer> o2) {
            return o1.getValue().compareTo(o2.getValue());
        }});

       System.out.println(l);
    }