java stringbuilder

import java.util.Scanner; public class EffectivePalindrome { public static String solution(String s) { String answer = "NO"; s = s.toUpperCase().replaceAll("[^A-Z]", ""); String temp = new StringBuilder(s).reverse().toString(); if (s.equals(temp)) { answer = "YES"; } return answer; } public static void main(String[] args) { Scanner in = new Scanner(System.in); String s = in.nextLine(); System.ou..