异常1

 1     public static void main(String[] args) {
 2         Scanner sc = new Scanner(System.in);
 3         System.out.println("请输入数字给第一个加数赋值：");
 4         int num1 = 0;
 5         try {
 6             num1 = sc.nextInt();
 7         } catch (Exception ex) {
 8             System.out.println("输入的信息中出现数字以外的其他字符。");
 9         }
10         int num2 = 123;
11         System.out.println(num1 + "+" + num2 + "=" + (num1 + num2));
12 
13     }