Add data from Jlist to file

Hi all,

I am currently developing a java application that has a combo box and
when the user presses a button to delete an item out of the JList I
would like the data that is left inside the combo box to be written to
a CSV file so all the computer names go down in a column and not in a
row which is what it is doing currently. Below is the code I am using
in order to do this:

int index = lstComputerExceptions.getSelectedIndex();
          model.remove(index);

          int size = model.getSize();

          if (size == 0) { //Nobody's left, disable firing.
              btnDelete.setEnabled(false);

          } else { //Select an index.
              if (index == model.getSize()) {
                  //removed item in last position
                  index--;
              }

              lstComputerExceptions.setSelectedIndex(index);
              lstComputerExceptions.ensureIndexIsVisible(index);
              String computerName = model.toString();
              StringTokenizer st = new StringTokenizer(computerName,
"[,");
              st.nextToken();
              String computer = st.nextToken();

              try {
       BufferedWriter out = new BufferedWriter(new
FileWriter("C:\\Documents and Settings\\All Users\\Application Data\
\Remote Shutdown\\ExceptionsListTemp.csv"));
       out.write(computer);
       out.close();
// initiateComputerList();
       } catch (IOException ex) {
       System.err.println("Failed to add information to file");
       statusBar.setForeground(Color.red);
       statusBar.setText("Failed to add " +
txtComputerName.getText());
       }
              }

Any help in this matter would be highly appreciated.

Thank you