How to skip(do not wnat to get display) save dialogue box for file download

I am having servlet for downlading a file from server. When I call this servelt I am able to get the file from server but I get a save dialog box which I do not want. I want that this file should be stored at a specific location given by me in a servlet.
So haoe I can avoid that save dialog box and where I should specify the specific location?
Thanks in advance
package com.txcs.sms.server.servlet;
import java.io.*;
import java.util.zip.GZIPOutputStream;
import javax.servlet.*;
import javax.servlet.http.*;
public class DownloadServlet extends HttpServlet
 public DownloadServlet()
 separator = "/";
 root = ".";
 public void init(ServletConfig servletconfig)
 throws ServletException
 super.init(servletconfig);
 context = servletconfig.getServletContext();
 String s;
 if((s = getInitParameter("dir")) == null)
 s = root;
 separator = System.getProperty("file.separator");
 if(!s.endsWith(separator) && !s.endsWith("/"))
 s = s + separator;
 root = s;
 public void doGet(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
 throws ServletException, IOException
 doPost(httpservletrequest, httpservletresponse);
 public void doPost(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
 throws ServletException, IOException
 Object obj = null;
 String s = "";
 s = HttpUtils.getRequestURL(httpservletrequest).toString();
 int i;
 if((i = s.indexOf("?")) > 0)
 s = s.substring(0, i);
 String s1;
 if((s1 = httpservletrequest.getQueryString()) == null)
 s1 = "";
 else
 s1 = decode(s1);
 if(s1.length() == 0)
 httpservletresponse.setContentType("text/html");
 PrintWriter printwriter = httpservletresponse.getWriter();
 printwriter.println("<html>");
 printwriter.println(" Could not get file name ");
 printwriter.println("</html>");
 printwriter.flush();
 printwriter.close();
 return;
 if(s1.indexOf(".." + separator) >= 0 || s1.indexOf("../") >= 0)
 httpservletresponse.setContentType("text/html");
 PrintWriter printwriter1 = httpservletresponse.getWriter();
 printwriter1.println("<html>");
 printwriter1.println(" Could not use this file name by the security restrictions ");
 printwriter1.println("</html>");
 printwriter1.flush();
 printwriter1.close();
 return;
 File file = lookupFile(root + s1);
 if(file == null)
 httpservletresponse.setContentType("text/html");
 PrintWriter printwriter2 = httpservletresponse.getWriter();
 printwriter2.println("<html>");
 printwriter2.println(" Could not read file " + s1);
 printwriter2.println("</html>");
 printwriter2.flush();
 printwriter2.close();
 return;
 if(!file.exists() || !file.canRead())
 httpservletresponse.setContentType("text/html");
 PrintWriter printwriter3 = httpservletresponse.getWriter();
 printwriter3.println("<html>");
 printwriter3.println(" Could not read file " + s1);
 printwriter3.print(" Reasons are: ");
 if(!file.exists())
 printwriter3.println("file does not exist");
 else
 printwriter3.println("file is not readable at this moment");
 printwriter3.println("</html>");
 printwriter3.flush();
 printwriter3.close();
 return;
 String s2 = httpservletrequest.getHeader("Accept-Encoding");
 boolean flag = false;
 if(s2 != null && s2.indexOf("gzip") >= 0 && "true".equalsIgnoreCase(getInitParameter("gzip")))
 flag = true;
 if(flag)
 httpservletresponse.setHeader("Content-Encoding", "gzip");
 httpservletresponse.setHeader("Content-Disposition", "attachment;filename=\"" + s1 + "\"");
 javax.servlet.ServletOutputStream servletoutputstream = httpservletresponse.getOutputStream();
 GZIPOutputStream gzipoutputstream = new GZIPOutputStream(servletoutputstream);
 dumpFile(root + s1, gzipoutputstream);
 gzipoutputstream.close();
 servletoutputstream.close();
 } else
 httpservletresponse.setContentType("application/octet-stream");
 httpservletresponse.setHeader("Content-Disposition", "attachment;filename=\"" + s1 + "\"");
 javax.servlet.ServletOutputStream servletoutputstream1 = httpservletresponse.getOutputStream();
 dumpFile(root + s1, servletoutputstream1);
 servletoutputstream1.flush();
 servletoutputstream1.close();
 private String getFromQuery(String s, String s1)
 if(s == null)
 return "";
 int i = s.indexOf(s1);
 if(i < 0)
 return "";
 String s2 = s.substring(i + s1.length());
 if((i = s2.indexOf("&")) < 0)
 return s2;
 else
 return s2.substring(0, i);
 private void dumpFile(String s, OutputStream outputstream)
 String s1 = s;
 byte abyte0[] = new byte[4096];
 try
 BufferedInputStream bufferedinputstream = new BufferedInputStream(new FileInputStream(lookupFile(s1)));
 int i;
 while((i = bufferedinputstream.read(abyte0, 0, 4096)) != -1)
 outputstream.write(abyte0, 0, i);
 bufferedinputstream.close();
 catch(Exception exception) { }
 private String decode(String s)
 StringBuffer stringbuffer = new StringBuffer(0);
 for(int i = 0; i < s.length(); i++)
 char c = s.charAt(i);
 if(c == '+')
 stringbuffer.append(' ');
 else
 if(c == '%')
 char c1 = '\0';
 for(int j = 0; j < 2; j++)
 c1 *= '\020';
 c = s.charAt(++i);
 if(c >= '0' && c <= '9')
 c1 += c - 48;
 continue;
 if((c < 'A' || c > 'F') && (c < 'a' || c > 'f'))
 break;
 switch(c)
 case 65: // 'A'
 case 97: // 'a'
 c1 += '\n';
 break;
 case 66: // 'B'
 case 98: // 'b'
 c1 += '\013';
 break;
 case 67: // 'C'
 case 99: // 'c'
 c1 += '\f';
 break;
 case 68: // 'D'
 case 100: // 'd'
 c1 += '\r';
 break;
 case 69: // 'E'
 case 101: // 'e'
 c1 += '\016';
 break;
 case 70: // 'F'
 case 102: // 'f'
 c1 += '\017';
 break;
 stringbuffer.append(c1);
 } else
 stringbuffer.append(c);
 return stringbuffer.toString();
 public String getServletInfo()
 return "A DownloadServlet servlet ";
 private File lookupFile(String s)
 File file = new File(s);
 return file.isAbsolute() ? file : new File(context.getRealPath("/"), s);
 private static final String DIR = "dir";
 private static final String GZIP = "gzip";
 private ServletContext context;
 private String separator;
 private String root;
 private static final String VERSION = "ver. 1.6";
 private static final String CPR = "A DownloadServlet servlet ";
}

Can't be done, for obvious security reasons.
Would you want someone downloading something into your windows\system directory when you navigate to their webpage?

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