Its printimg reverse order for the lower what can i do

Question

//Task:
Create a program that replaces each letter in a message with its corresponding letter in a backwards version of the English alphabet.

Input Format:
A string of your message in its normal form.

Output Format:
A string of your message once you have encoded it (all lower case).

Sample Input:
Hello World

Sample Output:
svool dliow
import java.util.*;
import java.util.Scanner;
public class Program
{
public static void main(String[] args) {

Scanner sc = new Scanner(System.in);
String str = sc.nextLine();

StringBuilder sb = new StringBuilder(str);
sb.lower(); System.out.println(sb.reverse().toString());
}
}

Answer 1

Nipun this can be solved ie as follows:

https://code.sololearn.com/cXtc5dSR1m7V/?ref=app

Answer 2

The task is not to reverse the string, but rather to reverse the alphabet letters in the string. 'a' becomes 'z', 'b' becomes 'y', 'c' becomes 'x'...