java 的exception throw try catch

 1 import java.util.*;
 2 
 3 public class MyException extends Exception {
 4 
 5     private static final Exception Exception = null;
 6     private static final Exception NullPointerException = null;
 7 
 8     public static void main(String[] args) {
 9         try {
10             throw (NullPointerException);
11         } catch (NullPointerException e) {
12             System.out.println("@@@@@");
13         } catch (Exception e) {
14             System.out.println("$$$$");
15         } finally{
16             System.out.println("#####");
17         }
18     }
19 
20 }
结果：
@@@@@
#####