How to count words in a text file, java 8-style

Question

I\'m trying to perform an assignment that first counts the number of files in a directory and then give a word count within each file. I got the file count alright, but I\'m

Answer 1

In my opinion, the simplest way to count the words in a file using Java 8 is this:

Long wordsCount = Files.lines(Paths.get(file))
    .flatMap(str->Stream.of(str.split("[ ,.!?\r\n]")))
    .filter(s->s.length()>0).count();
System.out.println(wordsCount);

And to count all the files:

Long filesCount = Files.walk(Paths.get(file)).count();
System.out.println(filesCount);

Answer 2

Word count example:

Files.lines(Paths.get(file))
    .flatMap(line -> Arrays.stream(line.trim().split(" ")))
    .map(word -> word.replaceAll("[^a-zA-Z]", "").toLowerCase().trim())
    .filter(word -> !word.isEmpty())
    .collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));

Files count:

Files.walk(Paths.get(file), Integer.MAX_VALUE).count();
Files.walk(Paths.get(file)).count();