Check Palindrome String

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter a string: ");
        String s = sc.nextLine();

        String clean = s.replaceAll("\\s+", "").toLowerCase();
        String rev = new StringBuilder(clean).reverse().toString();

        if (clean.equals(rev)) {
            System.out.println("Palindrome");
        } else {
            System.out.println("Not Palindrome");
        }
        sc.close();
    }
}