Java 8/9: Can a character in a String be mapped to its indices (using streams)?

Question

Given a String s and a char c, I\'m curious if there exists some method of producing a List list from s (where

Answer 1

Can be done with IntStream

public static List getIndexList(String s, char c) {
    return IntStream.range(0, s.length())
                    .filter(index -> s.charAt(index) == c)
                    .boxed()
                    .collect(Collectors.toList());
}