import java.io.*;
import java.util.Vector;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import dataList.*;

public class UpdateServlet extends HttpServlet
{

    private dataList list;
    protected void doPost (HttpServletRequest req, 
			  HttpServletResponse res) throws ServletException, IOException{ 
	PrintWriter out = res.getWriter();
	res.setContentType("text/html");
	ServletContext context = getServletConfig().getServletContext();
	list = (dataList)context.getAttribute("shared-list");
	{
	    boolean ok;
	    String[] details = new String[4];
	    details[0] = req.getParameter("firstName");
	    details[1] = req.getParameter("lastName");
	    details[2] = req.getParameter("id");
	    details[3] = req.getParameter("email");
	    ok=list.updateList(details);
	    if(ok=true)
		{
		    out.println("<H2>Your details have been recorded. Thank You.</H2>");
		    out.println("<br><a HREF=\"HomeServlet\">Show Results</A>");
		}
	    else
		{
		    out.print("<H2>Sorry. The system failed to update.</H2>");
		}
	}//end stam {}
    } //end doPost method 

}//end UpdateServlet