Why doesn't the HashMap option work?

Question

Java

It is necessary that each element of the array be counted, how many times it occurs.

static HashMap<Integer, String> number(String[] array){
        HashMap<Integer, String> map = new HashMap<>();
        int number = 0;
        for (int i = 0; i < array.length; i++){
            for (int j = 0; j < array.length; j++){
                if (array[i].equals(array[j])){
                    number++;
                    map.put(number, array[i]);
                }

            }
        }
        return map;
    }

Answer 1

1. Map is a structure like {Key, Value} - you have the key and value mixed up in places.
2. int number = 0 - must be in a different place.
3. Learn the methods of the Map class - this task can be solved in one loop.