如何创建一个可以使用try.....catch.......捕获的异常

代码很简单，大家一看基本上就能明白（有一定的java基础，熟悉try......catch.....finally的使用方法）

 1 package com.nokia.test1;
 2
 3
 4 public class test {
 5
 6
 7     public static void main(String[] args) {
 8
 9         NumberTest n = new NumberTest();
10
11         //捕获异常
12         try{
13             System.out.println("商="+n.div(1,0));
14
15         }catch(customException1 yc){
16             System.out.println(yc.getMessage());
17             yc.printStackTrace();
18         }
19         catch(customException2 yx)
20         {
21             System.out.println(yx.getMessage());
22             yx.printStackTrace();
23         }
24         catch(Exception y)
25         {
26             System.out.println(y.getMessage());
27             y.printStackTrace();
28         }
29
30         finally{ System.out.println("finally!");} ////finally不管发没发生异常都会被执行
31
32
33
34     }
35
36 }
37
38 class customException1 extends Exception{
39
40     public customException1(String msg) {
41         super(msg);
42         // TODO Auto-generated constructor stub
43     }
44 }
45
46
47 class customException2 extends Exception{
48
49     public customException2(String message) {
50         super(message);
51         // TODO Auto-generated constructor stub
52     }
53 }
54
55
56 class NumberTest{
57
58     public int div(int x, int y) throws customException1, customException2 {
59
60         if (y<0) {
61
62             throw new customException1("您输入的是"+y+",规定除数不能为负数!"); //抛出异常
63         }
64
65          if(y==0)
66             {
67                 throw new customException2("您输入的是"+y+",除数不能为0!");
68             }
69
70         return x / y;
71     }
72
73
74 }

如有什么好的建议，请畅所欲言！！！！！

参考链接：http://blog.csdn.net/stellaah/article/details/6738424

原文地址：https://www.cnblogs.com/revel171226/p/8297267.html