Problem with logout in servlet After logging out i need to expire the pages

Question

I have a problem in logout using servlet.
I introduced sessions in my page and while logout i used
session.removeAttribute("name");
session.removeAttribute("password");
res.setHeader("Cache-Control","no-store"); //Directs caches not to store the page under any circumstance
     res.setDateHeader("Expires", 0); //Causes the proxy cache to see the page as "stale"
     res.setHeader("Pragma","no-cache"); //HTTP 1.0 backward compatibility
String user=(String)session.getAttribute("name");
          System.out.println(user);
          if(user==null)
               System.out.println("hi");
               req.setAttribute("Error", "Session has ended. Please login.");
               res.sendRedirect("http://localhost:8080/homepage.html");
and after i logout im redirected to login page but after clicking back button im getting back to restricted pages(the pages b4 logout).
what should i do?????

Answer 1

Thanks Dear BalusC,
I tried with this,
rs.getString("DATA_SCAD1")// where the source from .xls files
String pattern = "yyyy-MM-dd";
SimpleDateFormat format = new SimpleDateFormat(pattern);
try {
Date date = format.parse("DATA_SCAD1");
System.out.println(date);
} catch (ParseException e) {
e.printStackTrace();
System.out.println(format.format(new Date()));
this out put gives me Tue Apr 03 00:00:00 IST 2007
But I want to display the date format in yyyy-mm-dd.
regards,
maza