charAt() or substring? Which is faster?

Question

I want to go through each character in a String and pass each character of the String as a String to another function.

String s = \"abcdefg\";
for(int i = 0         


        

Answer 1

I would first obtain the underlying char[] from the source String using String.toCharArray() and then proceed to call newFunction.

But I do agree with Jesper that it would be best if you could just deal with characters and avoid all the String functions...