asked on

Writing to file using Applet Problem

I managed to read a text file from the host where the applet originates using a URL, Now,I need to write to it again. How do I do it.
Here is code I used to read from the textfile. I used a vector to read from it to a List box.
Thanx...

public void readWords()
{
//get path to data from parameter..
String dataPath = getParameter("categfile");
if (dataPath ==null){
System.out.println("No data variable found");
return;
}
URL dtex;
try{
dtex =new URL(getDocumentBase(),dataPath);
}
catch (MalformedURLException e) {
System.out.println("Bad data URL");
return;
}

try {

URLConnection d =dtex.openConnection();

BufferedReader word = new BufferedReader(new InputStreamReader(d.getInputStream()));

//for(int i=0; i>2; i++)
while ((inputLine = word.readLine()) != null){
System.out.println(inputLine);
wordVec.addElement(inputLine);
}
word.close();
}
catch (MalformedURLException e){//new URL() failed
System.out.println("No data variable eeeeee found");

return;
}
catch (IOException e){//openConnection() failed

System.out.println("No data variablefffff found");

return;
}
}

ASKER CERTIFIED SOLUTION

Mick Barry

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rjackman

I think u can
Use the same procedure and get the outputstream for writing to file
then u have to give the permission to the applet for writing to file for that u have to create the policy file that give the prmission to applet for writting to file and place it in to directory from where u are running the applet for more info pls refer the following site

pls refer to Question No: 4
http://java.sun.com/sfaq/#read

for giving permission refer to following

refer point No2

http://java.sun.com/docs/books/tutorial/security1.2/tour1/index.html

cheers
RJ

Mick Barry

> Use the same procedure and get the outputstream for writing to file

And what is that output stream going to connect to on the server?

Mick Barry

> pls refer to Question No: 4

That refers to writing files on the client, not the server.
As does the second link.

LexZEUS

>I think u can Use the same procedure and get the outputstream for writing to file

I don't think so.. it will cause big security hole, if it is doable, then I want to create java application to read and modify Microsoft.com's main page (index.html) .. :)

LexZEUS

use ftp utility to upload the file...

http://sourceforge.net/projects/j-ftp/
http://www.enterprisedt.com/downloads/ftp.html
http://www.kcmultimedia.com/jftp/download.html

as long as you upload/download the file to the same internet domain, I think ftp will works fine in applet (no security exception)...

Moondancer

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