判断是否回文数

package test;public class Test{public static void main(String[] args) {int num = 102201;int temp = num;int r = 0;if(num >= 0 && num<10){System.out.println("是");return;}else{while(temp/10>0){r = r*10+temp%10;temp = temp/10;}r = r*10 + temp;}System.out.println(r);if(r==num){System.out.println("是");}else{System.out.println("不是");}}}