mise à jour automatique de jtable à partir de BD

public class Gestion_Stock extends JFrame { 
....
....
public JTable getJTableClient()  {

    if (jTableClient == null){

    jTableClient = new JTable(new BdSelection());
    jTableClient.setAutoCreateRowSorter(true);
    }
    return jTableClient;
    }
....
....
}//fin classe Gestion_stock

 
publicclass BdSelection extends AbstractTableModel 
{
privatestaticfinallong serialVersionUID = 1L;
privatestatic String url;
private Vector data = new Vector();
private Vector columnNames = new Vector <String> ();


public BdSelection ()
{
 
try
{
try
{
Class.forName("com.mysql.jdbc.Driver");
}
catch(ClassNotFoundException ex)
{
//....
}
    url ="jdbc:mysql://localhost:3306/gestion_stock";
    System.out.println("connection à la BdSelection");
 
    Connection connection = DriverManager.getConnection(url, "root", "");
    Statement stmt = connection.createStatement();

    String sql = "select * FROM client";
    ResultSet rs = stmt.executeQuery(sql);
    ResultSetMetaData md = rs.getMetaData();
int columns = md.getColumnCount();
 
for(int i = 1; i <= columns; i++){
            columnNames.addElement(md.getColumnName(i));
}
 
while(rs.next()){
    Vector row = new Vector(columns);
 
for(int i = 1; i <= columns; i++){
    row.addElement(rs.getObject(i));
}
 
    data.add(row);
}//fin while
    rs.close();
    stmt.close();
}
catch(SQLException e)
{
    System.out.println(e.getMessage());
    System.out.println(e.getStackTrace());
}
}//fin constructeur

    @Override
publicint getColumnCount(){
return columnNames.size();
}
 
    @Override
publicint getRowCount(){
return data.size();
}
 
    @Override
public Object getValueAt(int row, int column){
        Vector rowData = (Vector) data.elementAt(row);
return rowData.elementAt(column);
}
 
    @Override
publicboolean isCellEditable(int arg0, int arg1){
returntrue;
}
    @SuppressWarnings("unchecked")
    @Override
publicvoid setValueAt(Object value, int row, int col){

        Vector dataRow = (Vector)data.elementAt(row);
        dataRow.setElementAt(value, col);
        fireTableCellUpdated(row, col);
}
}
 

 
publicclass AjouterNouveauClient extends JDialog {
....
public JButton getJButton(){
if(jButton == null){
			jButton = new JButton();
			jButton.setText("Valider");
			jButton.addActionListener(new java.awt.event.ActionListener(){
publicvoid actionPerformed(java.awt.event.ActionEvent e){

                                    NouveauClient nc = new NouveauClient();//instanciation d'une classe contenant les champs et les getters/setter
                                    nc.setIdClient(jTextFieldIdClient.getText().trim());
                                    nc.setNom(jTextFieldNom.getText().trim());
				    nc.setPrenom(jTextFieldPrenom.getText().trim());
				    nc.setAdresse(jTextFieldAdresse.getText().trim());
				    nc.setCodePostal(jTextFieldCp.getText().trim());
				     nc.setCivilite((String)jComboBoxCivilite.getSelectedItem());
				    nc.setVille(jTextFieldVille.getText().trim());
				    nc.setTel(jTextFieldTel.getText().trim());
				    nc.setFax(jTextFieldFax.getText().trim());
				    nc.setMail(jTextFieldMail.getText().trim());

new BaseDonnees(nc);                                   
}
});
}
return jButton;
}
....
}
 

 
publicclass BaseDonnees  {
.....
public BaseDonnees (NouveauClient nClient){
    String sql = "INSERT INTO client (Id, Civilité, Nom, Prénom, Adresse, Code_postal, Ville, Téléphone, Fax, Mail) " +
"VALUES ("+
"'"+nClient.getIdClient()+"',"
            +"'"+nClient.getCivilite()+"',"
            +"'"+nClient.getNom()+"',"
            +"'"+nClient.getPrenom() +"',"
            +"'"+nClient.getAdresse()+ "',"
            +"'"+nClient.getCodePostal() + "',"
            +"'"+nClient.getVille()+ "',"
            +"'"+nClient.getTel()+"',"
            +"'"+nClient.getFax()+"',"
            +"'"+nClient.getMail()+"'"+")";

            System.out.println("Insertion dans la base ++++++++++++++");  
            .......
}
}