Count int occurrences with Java8

Question

Is there a better way to count int occurrences with Java8

int[] monthCounter = new int[12];
persons.stream().forEach(person -> monthCounter[person.getBirt         


        

Answer 1

Try:

 Map counters = persons.stream()
     .collect(Collectors.groupingBy(p -> p.getBirthday().getMonthValue(), 
         Collectors.counting()));