how to call jsp variable through servlet

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how to call jsp variable through servlet

Hi deepak;

i am posting some peace of code. and i need to call jsp varable <%=f%> through servlet so that it can call the downlode.jsp page.

String f = "C:/temp/View HR LeaveBalance2.txt"; FileWriter writer = new FileWriter(f, true); BufferedWriter bw = new BufferedWriter(writer); while (rs.next()) { String st1 = rs.getString(1); String st2 = rs.getString(2); String st3 = rs.getString(3); String st4 = rs.getString(4); bw.write(st1 + " " + st2 + " " + st3 + " " + st4); bw.newLine(); bw.newLine();
out.println(st1); out.println(st2); out.println(st3); out.println(st4); and i given a hyperlink to call this downlode page like out.println("Download document");

when i click on this hyper link it gives error i want only one downlode.jsp and it will save all the text.file if i put like code given it will work fine but [request.getParameter("ff")]not working can u give me any suggetion for that

<% String file = "C:/temp/A1.txt"; //request.getParameter("ff");

File f = new File(file);
String filename = f.getName();
String type = getMimeType("file:" + file);
response.setContentType(type);
response.setHeader("Content-Disposition","attachment;    filename=\"" + filename + "\"");
String name = f.getName().substring(f.getName().lastIndexOf("/") + 1, f.getName().length());
InputStream in = new FileInputStream(f);
ServletOutputStream outs = response.getOutputStream();
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