How to insert Space after every Character of an existing String in Java?

Question

I need to insert a space after every character of a string.

i.e. String name = \"Joe\";

should become: \"J o e\"

Answer 1

Solution without regex

name.chars().mapToObj(i -> (char) i + " ").collect(Collectors.joining()).strip()

Don't like regex because compile method slow

Answer 2

This will space out all letters in each word and not between words

"Joe Black".replaceAll("\\B", " ") -> "J o e B l a c k"

This will put space for each character (including original spaces)

"Joe Black".replaceAll("\\B|\\b", " ") -> " J o e  B l a c k "

Answer 3

char[] stringArray = strOrig.toCharArray(); 
StringBuilder sb = new StringBuilder();

for(int index=0; index < stringArray.length; index++) {
   sb.append(stringArray[index]);
   sb.append(" ");
}