java高薪之路__002_异常处理

 1 package learn.JavaBasics.Class;
 2 
 3 import java.util.Date;
 4 
 5 /**
 6  * 如何自定义一个异常类
 7  * 1. 继承一个现有的异常类
 8  * 2. 提供一个序列号，提供几个重载的构造器
 9  * 3. 像其异常一样使用
10  */
11 public class MyException extends RuntimeException {
12     private static final long serialVersionUID = -1201746919629597153L;
13 
14     public MyException() {
15         
16     }
17     
18     public MyException(String msg) {
19         super(msg);
20     }
21     
22     public static void main(String... args) {
23         try {
24             throw new MyException("error in my exception"+new Date());
25         } catch (Exception e) {
26             // TODO Auto-generated catch block
27             e.printStackTrace();
28         }
29     }
30 }