Urgent ! Data is not shown in vector

Question

Hi, Im a new bee to Java
I want to store a Vector variable into a session and use it
next time,but my code does not work. the code is as follows
<%
     Vector data;
     Vector dataStore;
     data=(Vector)request.getAttribute("storeV"); /
     if(data==null || data.size() == 0)
     data = new Vector();
     session.putValue("storeV",data);
     dataStore=(Vector)request.getAttribute("storeValues");
     if(dataStore==null || dataStore.size() == 0)
     dataStore = new Vector();
     session.putValue("storeValues",dataStore);
     String actn=request.getParameter("action");
String cdate=request.getParameter("tdate"); // Taking input from a form
String cactcode=request.getParameter("tactcode");
String cactivity=request.getParameter("tactivity");
String cproject=request.getParameter("tproject");
String cnum=request.getParameter("tnum");
String cthr=request.getParameter("thr");
String cmin=request.getParameter("tmin");
String cremark=request.getParameter("tremark");
               data.add(cdate); //storing elements into vector "data"
          data.add(cactcode);
          data.add(cactivity);
          data.add(cproject);
          data.add(cnum);
          data.add(cthr);
          data.add(cmin);
          data.add(cremark);
%>
After this follows html code and in it again i access the vectors here is the code
<%
int i=0;
if(actn!=null && actn.equals("addactive")){      // if add button clicked in form then it returns addactive
          dataStore.addAll(data); //copying all the elements into dataStore vector
               actn="";
     %>
     <tr><td><input type="radio" name="tradio" value="radiobutton"></td><td></td>
     <% for(;(!dataStore.isEmpty())&&i<dataStore.size();i++)
          %>
<td><% if (dataStore.elementAt(i)!= null) out.print( (String)dataStore.elementAt(i) ); %>
          �</td>
     <%} %>
     </tr>
     <%      session.putValue("storeValues",dataStore);
}     dataStore=(Vector)session.getValue("storeValues");
%>
After using Session also the values in the vectors are not showing up.
Pls help me, thanx in advance.

Answer 1

move below lines to end of ur code ...
u shd set the values to session only after you set all the values to the object
session.putValue("storeV",data);
session.putValue("storeValues",dataStore);