怎么用java编程求回文数

import java.util.Scanner;

public class PalindromeNumber {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入一个数字：");
        int num = scanner.nextInt();
        
        String numStr = String.valueOf(num);
        String reverseStr = new StringBuilder(numStr).reverse().toString();
        
        if (numStr.equals(reverseStr)) {
            System.out.println("该数字是回文数");
        } else {
            System.out.println("该数字不是回文数");
        }
    }
}