Erratic behaviour of jsp & servlet

Question

Hi,
I was just checking few things with passing as array from servlet to jsp
I was getting the expected output from jsp too, but when i refreshed the jsp i may or may not get the output
i.e. the output may come after 1 refresh click or it may not come even after clicking 4-5 times and it may come after 6th click.
Does it related to session in anyway?
The servlet code is,
package core;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class BeanTest extends HttpServlet
     String ar[]={"Ok ","This ","is ","working....! asap"};
     HttpSession hs;
     public void doGet(HttpServletRequest req,HttpServletResponse res)throws ServletException, IOException
          res.setContentType("text/html");
          hs=req.getSession(true);
          hs.setAttribute("ar",ar);
}And jsp code is
<%@ page session="true"%>
<jsp:include page="BeanTest" flush="true"/>
<%!String[] str=new String[3];
int i=0;
%>
<%str=(String[])session.getAttribute("ar");%>
Output is here <br>
<%while(i<4)
{%>
     <%=str%>
     <%
          i++;
}%>
Any idea why this is happening, im using tomcat 5.5 and jdk 1.5.
Thanks,
Harsh                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

Answer 1

This code is just to test, how a servlet can pass an array to a jsp?
Actually i'm having some problem with a project where i want to implement this functionallity,
there i want to take some data in string array (through servlet) from database and then want to pass that array to a jsp.
You can say it was just a prototype, I don't want to put my database code to jsp, for that reason i want to implement it.