JTable to txt File

[Tzaphiel]

Hi - I am relatively new to Java and was wondering if anyone could help me with the following issue. I am trying to write a JTable to a txt file, and have the JTable also be able to read the txt file. The problem is that it is writing the letters with a square symbol between each of them and therefore is unable to then read them back into the JTable. Here is my code for saving the file.

Thanks!

PHP Code:

    public void saveFile() {
        File file = null;
        JFileChooser fc = new JFileChooser();
        fc.setCurrentDirectory (new File ("."));
        int result = fc.showSaveDialog (this);
        if (result == JFileChooser.APPROVE_OPTION) {
            file = fc.getSelectedFile();
            if (file.exists ()) {
                int response = JOptionPane.showConfirmDialog (null,
                    "Overwrite existing file?","Confirm Overwrite",
                JOptionPane.OK_CANCEL_OPTION,
                JOptionPane.QUESTION_MESSAGE);
                FileOutputStream fos; 
                DataOutputStream dos;
                    try {
                      fos = new FileOutputStream(file);
                      dos = new DataOutputStream(fos);
                      for (int i = 0; i < Billing.data[0].length; i++){;
                          dos.writeChars(table.getValueAt(i, 0).toString().trim());
                          dos.writeChars("\t");
                          dos.writeChars(table.getValueAt(i, 1).toString().trim());
                          dos.writeChars("\t");
                          dos.writeChars(table.getValueAt(i, 2).toString().trim());
                          dos.writeChars("\t");
                          dos.writeChars(table.getValueAt(i, 3).toString().trim());
                          dos.writeChars("\t");
                          dos.writeChars(table.getValueAt(i, 4).toString().trim());
                          dos.writeChars("\t");
                          dos.writeChars(table.getValueAt(i, 5).toString().trim());
                          dos.writeChars("\n");
                      } // end for
                    } // end try
                    catch (IOException e) {
                        System.err.println(e.getMessage());
                    } // end catch
            } // end inner if
        else fc.cancelSelection();
        } // end outer if
    } // end method saveFile