异常练习1

 1 package Exception;
 2 
 3 public class TestException {
 4 
 5     public static void main(String[] args) {
 6         // TODO 自动生成的方法存根
 7         for(int i=0;i<4;i++){
 8             int  k;
 9             switch(i){
10                 case 0:
11         int zero=0;
12         try{
13         k=911/zero;
14         break;
15         }catch(Exception ex)
16         {
17             ex.printStackTrace();
18             System.out.println("异常1"+ex.getMessage());
19         }
20         
21         case1:
22         try{
23         int  b[]=null;
24         k = b[0];
25         break;
26         }
27         catch(Exception ex)
28         {
29             ex.printStackTrace();
30             System.out.println("异常二"+ex.getMessage());
31         }
32         case2:
33         try{            
34         int c[]=new int[2];
35 
36         k=c[9];
37         break;
38         }
39         catch(Exception ex)
40         {
41             ex.printStackTrace();
42             System.out.println("异常三"+ex.getMessage());
43             
44         }
45         case3:
46         try{            
47         char  ch="abc".charAt(99);
48         }
49         catch(Exception ex)
50         {
51             ex.printStackTrace();
52             System.out.println("异常四"+ex.getMessage());
53         }
54         break;
55             }
56         }
57         
58 
59     }
60 
61 }