HOW CAN I WRITE TEXT IN A FILE

Question

HI,
I have problems with saving files on my hard disk with an JAVA Applet.
Do you know how to do it in the best way?
here is the code i'm trying:
public String getCount()
      int count=456;
      String rec=null;
      DataOutputStream dos = null;
      try
        URL                url;
        URLConnection      urlConn;      
        url = new URL(getCodeBase().toString() + "counter.txt");
        urlConn = url.openConnection();
        urlConn.setDoOutput(true);
        urlConn.setUseCaches(false);
        urlConn.setRequestProperty ("Content-Type", "application/x-www-form-urlencoded");
        rec=""+count;
        dos = new DataOutputStream(urlConn.getOutputStream());
        dos.writeChars(rec);
        dos.flush();
        dos.close();
       catch (MalformedURLException mue) { return mue.toString(); }
       catch (IOException ioe) { return ioe.toString(); }
      return rec;
    }this code is simply saving the value ot count in the file "counter.txt"
I think the problem comes at the line: dos = new DataOutputStream(urlConn.getOutputStream());
It doesn't throws exception, it just stopes there and doesn't show any result.
WHY?
If you have some ideas ...thanks.
the class DataInputStream is working perfectly. I'm reading, but saving does not work.

Answer 1

You're using getCodeBase() to construct the file name, apparently, so I guess you are wanting to write to a file on the server where the applet was loaded from. And it looks like you're trying to do a POST to the URL that you construct, or something like that. But the URL ends in ".txt" so most likely your server isn't exposing that URL to the outside world.
You're on the right track, but you need to write to a URL that can accept POST requests and knows what to do with them. You can't just write to a file on the server -- if you could do that in your applet then anybody in the world could do it from a simple program, so consider the security implications of that.