How to find out the status of a file in java

Question

Hi
I have an application that writes xml files anytime it is invoked. I am writing all unique files to a windows directory.
i also have an ftp client working on that directory that scans all the files and sends them to the server every few minutes.
I want to find a way using which all the files except the one that is being currently written by the application are transferred.
Is there a way to find out in java as to what file is being written to by the operating system at that point of time ? I have looked around for quite a long time and have not been able to find a solution to this problem.
Any help will be deeply appreciated.

Answer 1

out = new FileOutputStream(matcher.group(1)+".open" , true);
                      FileChannel ch = out.getChannel();
                                   FileLock lock =  ch.lock(0L, Long.MAX_VALUE, false);
                               // Connect print stream to the output stream          
                                   p = new PrintStream( out );
                        p.println ("\n" + parms.getProperty( value ) + "\n");
                              p.flush();
                        p.close();
                              lock.release();Ok, I tried implementing locks but I dont know why it is not working...An exception is thrown and nothing is wriiten to the file. I have employed a complete lock on the file so that no other JVM application can use it.
Actually this is a server that grabs data sent from an Iframe and writes it down to a temp file. I open a file input stream, lock it and then use a printwriter strream to write the realyed data to the file. Any inputs as to what is wrong with the code snippet above?????