java输入最大10位数，倒数输出（很鸡肋）

public class D {
    public static void main(String[] args) {

        System.out.println("请输入数字（最大十位数）:");
        Scanner sc = new Scanner(System.in);
        int sun = sc.nextInt();
        System.out.println("已输入:"+sun);
        int result = 0;
        int i = 0;
        while (true){
            int n = sun%10;
            if (n == -1){
                break;
            }
            i++;
            System.out.println("倒数第"+i+"位="+n);
            result = result*10+n;
            sun = sun/10;

            if (sun == 0){
                break;
            }

       }
　　}
}