現在給出整數x和y,要求rev(rev(x) + rev(y))為多少？

import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner reader = new Scanner(System.in);
        int x = reader.nextInt();
        int y = reader.nextInt();
        System.out.println(rev(rev(x)+rev(y)));
    }
    
    public static int rev(int x){
        StringBuffer buffer = new StringBuffer(x+"");
        buffer.reverse();
        return Integer.valueOf(buffer.toString());
    }
}