Java用args数组接收两个整数，做除法运算

Question

Answer 1

public class Test{
  public static void main(String [] args){
    int a, b;
    float rst;
    try {
        if (args.length != 2) {
            throw new IndexOutOfBoundsException();
        }
        a = Integer.parseInt(args[0]);
        b = Integer.parseInt(args[1]);
        if (b == 0) {
            throw new ArithmeticException();
        }
        rst = (float) a / b;
        System.out.println("result = " + rst);
    } catch (IndexOutOfBoundsException e) {
        System.out.println("输入参数不够或超出");
    } catch (NumberFormatException e) {
        System.out.println("非法参数");
    } catch (ArithmeticException e) {
        System.out.println("除零异常");
    } catch (Exception e) {
        e.printStackTrace();
    }
  }
}