java 判断回文数

package com.oop;

public class Demo1 {
	public static void main(String[] args) {
		int x = 12321;
		String s1 = String.valueOf(x);
		String s2 = new StringBuffer(s1).reverse().toString();
		if(s1.equals(s2)) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}
		
	}
}