异常测试。

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class yiChang {

    public static void main(String[] args) throws IOException {
        int [] ko =new int [15];
        int n,a;
        String x;
        BufferedReader keyin= new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter an integer:");
        x=keyin.readLine();
        n=Integer.parseInt(x);
        try {
            a=100/n;
            ko[15]=100;
            System.out.println("此描述无法执行！");
        }catch (ArithmeticException e){
            System.out.println("除数为0的错误");

        }catch (ArrayIndexOutOfBoundsException f){
            System.out.println("数组索引值大于数组长度的错误！");
        }
        System.out.println("执行完catch的描述");
    }
}