java實現判斷用戶輸入的字符串是否為回文字符串

//判斷用戶輸入的字符串是否為回文字符串
package classwork8;
import java.util.Scanner;
public class Huiwen {
    public static void pd(String s0) {
         StringBuffer s=new StringBuffer(s0);
         StringBuffer s1=s.reverse();
         boolean a=s0.equals(s1.toString());
         System.out.println(a==true?"是回文數":"不是回文數");
    }
    public static void main(String[] args) {
        String s0;
        Scanner in=new Scanner(System.in);
        s0=in.next();
        pd(s0);
    }

}