Use session to transfer oop object

<%@ page contentType="text/html;charset=Gb2312"%>
<%@ page import="java.io.*"%>
<%@ page import="java.text.*"%>
<%@ page import="PUB.*"%>
<%@ page import="javax.naming.*"%>
<%@ page import="java.util.*"%>
<%@ page import="java.sql.*"%>
<%@ page import="javax.sql.*"%>
<%@ page import="java.text.*"%>
<%@ page import="javax.naming.*"%>
<%

 
//创建session对象时：  
  MyDB   mydb   =   new   MyDB();  
  session.setAttribute("mydb",mydb);  
   
// 取对象时:  
   
  Object   mydb2   =   session.getAttribute("mydb");  
  MyDB   newg   =   (MyDB)mydb;
  out.println(newg.to_char("xxxx","yyyyy"));


%>