Can't write to multiple lines to file...please help

Question

Hi all ,
The following is trying to write to message receive from UDP packets. The problems is data_output can only write a single line of message to the file "serverlog.txt". How can write multiple line of message to the file?
     private void processUDPPackets(SelectionKey selectionKey){
          DatagramChannel datagramChannel = (DatagramChannel) selectionKey.channel();
          try{
               file_output = new FileOutputStream("serverlog.txt");
               data_output = new DataOutputStream(file_output);
               while(datagramChannel.receive(byteBuf) != null) {
                    byteBuf.flip();
                    charBuf = decoder.decode(byteBuf);
                    data_output.writeChars(charBuf.toString());
                    data_output.writeChars("\n");
                    byteBuf.clear();
               charBuf.clear();
          }catch(IOException e){
               selectionKey.cancel();
               System.out.println("Logout:: Server port:" + datagramChannel.socket().getLocalPort() +
                                        ". Client: " + datagramChannel.socket().getInetAddress() + " / " +
                                        datagramChannel.socket().getPort());
     }

Answer 1

Hi,
Instead of data_output.writeChars("\n");, do data_output.writeChars(System.getProperty("line.separator"));Rgds,
Andre'