Question on updating JTable contents

Question

I doing a java mail project, I constructed a tablemodel to store/show the mail contents:
class MailTableModel extends DefaultTableModel{
with one botton event I successfully added the mail information into a vector.
However, I couldn't get the JTable to update its view.
JTable is defined in the mainFrame class:
class MailFrame extends JFrame{
private JTable table;
public MainFrame(TableModel tm){
table = new JTable(tm) // reference to the tablemodel which has the data;
public someButton_actionPerformed(ActionEvent e){
// what to do to let the JTable to update and show the data?
// anybody can help?
somebody said the DefaultTableModel will update the view automatically
with the addRow method, well, not in my case, any suggestions?
Thanks!

Answer 1

somebody said the DefaultTableModel will update the view automatically with the addRow method, well, not in my case, It works for me. Reply 3 of this thread shows a simple example:
http://forum.java.sun.com/thread.jsp?forum=57&thread=290478