Creating a new row in a JTable

Question

How do i make a new row in a JTabel?

Answer 1

is there a line something like: newRow(); but anyway here is the code i have so far thanx for the help:
class UserSettings extends JFrame implements ActionListener {
  private JMenuBar menu = new JMenuBar();
  private JMenu Settings;
  private JMenuItem exit;
  private JButton sset;
  String[] columnNames = {"users","passwords"};
  Vector dat = new Vector();
  private JTable usertable;
  public UserSettings() {
    setSize(new Dimension(350, 350));
    setTitle("User Setings");
    Settings = new JMenu("Settings");
    menu.add(Settings);
    exit = new JMenuItem("Exit");
    exit.addActionListener(this);
    Settings.add(exit);
    sset = new JButton("Save settings");
    sset.addActionListener(this);
    try {
      BufferedReader userin = new BufferedReader(new FileReader("users/userp.txt"));
      String su;
      while ((su = userin.readLine()) != null) {
        String[] uspa = su.split(" ");
        dat.add(uspa);
    catch (FileNotFoundException ioe) {
      JOptionPane.showMessageDialog(null, "Iternal Error, contact [email protected] if the error persists", "", JOptionPane.WARNING_MESSAGE);
    catch (ClassCastException ioe){}
    catch (NullPointerException ioe) {}
    catch (IOException ioe) {
      JOptionPane.showMessageDialog(null, "Iternal Error, contact [email protected] if the error persists", "", JOptionPane.WARNING_MESSAGE);
    String[][] data = new String[dat.size()][];
    for(int x = 0; x < dat.size(); x++) {
      data[x] = (String[])dat.get(x);
    usertable = new JTable(data, columnNames);
    JScrollPane scrollpane = new JScrollPane(usertable);
    usertable.setPreferredScrollableViewportSize(new Dimension(50, 500));
    JPanel pane = new JPanel(new GridLayout(0, 1));
    getContentPane().add(scrollpane);
    getContentPane().add(sset, BorderLayout.SOUTH);
    setJMenuBar(menu);
  public void actionPerformed(ActionEvent e) {
    if (e.getSource() == sset) {
         int count = usertable.getRowCount();
         if (count == 1) {
         if (count == 2) {
         if (count == 3) {
      try {
           FileWriter uname = new FileWriter("users/usertest.txt");
           String sname;
           uname.write("test");
           uname.close();
      catch (IOException ioe) {
           JOptionPane.showMessageDialog(null, "Error saving you file, if error persists contact [email protected] or reenstal", "", JOptionPane.WARNING_MESSAGE);
      dispose();
    if (e.getSource() == exit) {
      int exitask = JOptionPane.showConfirmDialog(UserSettings.this, "Are you sure you want to exit? Any unsaved settinging changes will be lost!!");
      if (exitask == JOptionPane.YES_OPTION) {
        dispose();
Thanx again