I tried writing to a file on the server where the applet originated from. It does not write where as reading is successful. How do I perform simple write operation to a file on the server? I do not want to use socket connections because of firewall.

Part of my code:
URL url = new URL("http://ABCCompany/file.txt");
URLConnection urlConnection = url.openConnection();
DataOutputStream output =
new DataOutputStream (
new BufferedOutputStream (urlConnection.getOutputStream()));
output.writeBytes("hello");
output.flush();
output.close();