Java stuff

file.java

    Map<Integer,Integer> map = new HashMap<Integer,Integer>();
        
        for (Integer i : arr) {
            // MAP COMPUTE  EXAMPLE
            map.compute(i, (key,val) -> {
               if (val==null) {
                   return 0;
               }  else {
                   return val+1;
               }
            });
        }
        
    // GET ENTRY FROM MAP
    Map.Entry<Integer, Integer> e = map.entrySet()
                    .stream()
                    .max(Map.Entry.comparingByValue())
                    .get();

                        
        Integer maxCount = e.getValue();

==== sort map get single value // Comparator.reverseOrder()
        
        return map.entrySet()
            .stream()
            .filter(i-> maxCount.equals(i.getValue()))
            .map( i-> i.getKey())
            .sorted(Comparator.naturalOrder())
            .findFirst()
            .get();
    =========== 

J