关于finally代码块是否一定被执行的问题

 1 public class SystemExitAndFinally {
 2 
 3     
 4     public static void main(String[] args)
 5     {
 6         
 7         try{
 8 
 9             
10             System.out.println("in main");
11             
12             throw new Exception("Exception is thrown in main");
13 
14                     //System.exit(0);
15 
16         
17         }
18         
19         catch(Exception e)
20 
21             {
22             
23             System.out.println(e.getMessage());
24             
25             System.exit(0);
26         
27         }
28         
29         finally
30         
31         {
32             
33             System.out.println("in finally");
34         
35         }
36     
37     }
38 
39 
40 }