Counting elements of a Stream

Question

I want to count the different elements of a stream and am wondering why

Stream stream = Stream.of(\"a\", \"b\", \"a\", \"c\", \"c\", \"a\", \"a         


        

Answer 1

The following should work if you are not using parallel streams:

final int[] counter = {0};
stream.peek(s -> counter[0]++);