public static String acronym(final String input) {
        return Arrays
                .stream(input.toUpperCase().split("\\s"))
                .filter(word -> !STOP_WORDS.contains(word))
                .map(w -> String.valueOf(w.charAt(0)))
                .collect(joining(""));
    }
Your goal is to make a program that converts an input to its acronym.
Your input is guaranteed to have only letters and spaces. The input will have exactly one space between words.
You must output the acronym of the input.

https://codegolf.stackexchange.com/questions/75448/making-an-acronym
java8/src/main/java/com/shekhargulati/codegolf/AcronymMaker.java