Splitting word into letter using stack data structure

Question

How can I get split word into letters?
For instance: I have a word in the stack "dog" and I want to split into another stack like "d"
"o"
"g"

Answer 1

something like....:

char[] myChars = new char [yourString.length];
for (int I =0; I <yourString.length;I ++){
myChars[I ] = yourString.charAt(I);