如何在没有charAt()方法的情况下颠倒java中的字符串

public class ReverseString {
    public static void main(String[] args) {
        String str = "Hello, World!";
        String reversedStr = reverseString(str);
        System.out.println(reversedStr);
    }

    public static String reverseString(String str) {
        char[] charArray = str.toCharArray();
        int length = charArray.length;
        char[] reversedArray = new char[length];

        for (int i = 0; i < length; i++) {
            reversedArray[i] = charArray[length - 1 - i];
        }

        return new String(reversedArray);
    }
}