fixed reverse

public class Main {
    public void reverse(String str)
    {
        char[] s = str.toCharArray();
        char[] rstr = new char[s.length];

        int j = 0;
        for (int i = s.length; i > 0; i--)
        {
            rstr[j] = s[i - 1];
            j++;
        }
        
        for (char character : rstr) System.out.println(character);
    }
    
    public static void main(String[] args)
    {
        new Main().reverse("KING");
    }
}