Applet for File Loading

I am using jdk1.3 ,
I have written a program which calls a file :=

the program looks like this

import java.applet.*;
import java.awt.*;
import java.io.*;
import java.net.*;
import java.util.*;
import java.lang.*;

public class testing extends Applet
{
String str;
String file;
public void init()
{
file = getParameter("FileName");

try
{
FileInputStream fileIn = new FileInputStream(file);
int inBytes = fileIn.available();
byte inBuf[] = new byte[inBytes];
int bytes = fileIn.read(inBuf,0,inBytes);
str = new String(inBuf,0,bytes,"Default");
}
catch(Exception e)
{
String err = e.toString();
System.out.println(err);
str = new String("");
}

}

public void paint(Graphics g)
{
g.drawString(str,0,50);
}
}

The html file is

<applet code ="testing.class" width=300 height=300>
<param name=FileName value="d:\sz\temp.txt">
</applet>

every thing works fine for console based application but the problem is ,if i load the file on the server
for ex WinNt server and reference the file with

<param name=FileName value="http://ntserver/Inetpub/wwwroot/sz/temp.txt">

it is not loaded.
Netscape writes the below in JavaConsole message

netscape.security.AppletSecurityException: security.checkread: Read of '\\Ntserver\InetPub\wwwroot\sz\temp.txt' not permitted
I jhave loaded all the required files on the server.

can any one please guide me the right way;

Thanks

sachin

Hi
Using an Applet you cannot access any system directory structure and any other computers directory structure by doing this you are violating the security policy.

I think i have got you correct.
If yes and you want me to give you more details on this please reply

Thanks

Yes please provide me the solution for downloading and uploading of ifles over the net through applets.