java126-throw向上抛出异常

//throw抛出异常
 import java.util.Scanner;
 public class test66{
     static class A {
         void d() throws Exception {
             int a, b, c;
             Scanner in = new Scanner(System.in);
             System.out.println("亲输入a的值");
             a = in.nextInt();
             System.out.println("请输入b的值");
             b = in.nextInt();
             c = a % b;
             System.out.println("余数为" + c);
         }
     }
     public static void main(String[] args) throws Exception{
         A aa=new A();
         //try{
             aa.d();
         //}catch (Exception e){
             System.out.println("输入有误");
         //}
     }
 }