Question

Some ways to iterate through the characters of a string in Java are:

1. Using StringTokenizer?
2. Converting the String to a char[] and iterating over that.

What is the easiest/best/most correct way to iterate?

Answer 1

I use a for loop to iterate the string and use charAt() to get each character to examine it. Since the String is implemented with an array, the charAt() method is a constant time operation.

String s = '...stuff...';  for (int i = 0; i < s.length(); i++){     char c = s.charAt(i);             //Process char } 

That’s what I would do. It seems the easiest to me.

As far as correctness goes, I don’t believe that exists here. It is all based on your personal style.