package learn.JavaBasics.Class;

 import java.util.Date;

 /**
  * 如何自定义一个异常类
  * 1. 继承一个现有的异常类
  * 2. 提供一个序列号，提供几个重载的构造器
  * 3. 像其异常一样使用
  */
 public class MyException extends RuntimeException {
     private static final long serialVersionUID = -1201746919629597153L;

     public MyException() {

     }

     public MyException(String msg) {
         super(msg);
     }

     public static void main(String... args) {
         try {
             throw new MyException("error in my exception"+new Date());
         } catch (Exception e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
     }
 }