Sorting Descending order: Java Map

Question

What I want to do is sort a map by value. I went over many questions that are available on the stackoverflow site and found out following solution that does what I want but

Answer 1

You should use new TreeMap<>(Collections.reverseOrder());.

Map newMap = new TreeMap<>(Collections.reverseOrder());
newMap.putAll(myMap);

or to reverse an existing comparator like the value-comparator Collections.reverseOrder(comparator). It works like your approach swapping the two objects before invoking compare/compareTo.