Word Count Example should be <String, Long> instead of <String, Integer>

public class WordCountExample {

   public static void main(String[] args) {

      // Lines removed

      Map<String, Integer> wordCountMap = c1.entrySet().parallelStream()
         .map(e -> e.getValue().split("\\s"))
         .flatMap(Arrays::stream)
         .collect(() -> Collectors.groupingBy(Function.identity(), Collectors.counting()));
   }
}

Map<String, Long> wordCountMap