salve a tutti.
il mio problema è il seguente: dopo aver creato una JTable non riesco a visualizzare i dati contenuti nel vettore.
posto qui il codice.

----frame contentente la JTable con il relativo modello----
public class TabellaJFrame extends JFrame {

private static final long serialVersionUID = 1L;
private JPanel jContentPane = null;
private JScrollPane jScrollPane = null;
private JTable jTable = null;
private JPanel jPanel2 = null;
private JLabel nomeJL = null;
private JLabel cognomeJL = null;
private JLabel lavoroJL = null;
private JTextField nomeJTF = null;
private JTextField cognomeJTF = null;
private JTextField lavoroJTF = null;
private JButton okJB = null;
public Vector data = new Vector();

class MyTableModel extends AbstractTableModel {

private String[] columnNames = { "Nome", "Cognome", "Lavoro" };

public int getColumnCount() {
return columnNames.length;
}

public int getRowCount() {
return data.size();
}

public String getColumnName(int col) {
return columnNames[col];
}

public Object getValueAt(int row, int col) {
GenericBean gb = new GenericBean();
gb = (GenericBean) data.get(row);
switch (col) {
case 0:
return gb.getNome();
case 1:
return gb.getCognome();
case 2:
return gb.getLavoro();
default:
return "";
}
}

public void setValueAt(Object value, int row, int col) {
GenericBean gb = new GenericBean();
gb = (GenericBean) data.get(row);
switch (col) {
case 0:
gb.setNome((String) value);
break;
case 1:
gb.setCognome((String) value);
break;
case 2:
gb.setLavoro((String) value);
break;
default:
return;
}
fireTableCellUpdated(row, col);
}
}

/**
* This method initializes jScrollPane
*
* @return javax.swing.JScrollPane
*/
private JScrollPane getJScrollPane() {
if (jScrollPane == null) {
try {
jScrollPane = new JScrollPane();
jScrollPane.setBounds(new Rectangle(1, 1, 462, 231));
jScrollPane.setViewportView(getJTable());
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return jScrollPane;
}

/**
* This method initializes jTable
*
* @return javax.swing.JTable
*/
private JTable getJTable() {
if (jTable == null) {
try {
jTable = new JTable(new MyTableModel());
jTable.setAutoResizeMode(JTable.AUTO_RESIZE_SUBSEQ UENT_COLUMNS);
jTable.setCellSelectionEnabled(true);
jTable.setColumnSelectionAllowed(true);
jTable.setEnabled(true);
jTable.setGridColor(Color.black);
jTable.setShowGrid(true);
jTable.setBackground(Color.white);
jTable.setVisible(true);
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return jTable;
}

/**
* This method initializes jPanel2
*
* @return javax.swing.JPanel
*/
private JPanel getJPanel2() {
if (jPanel2 == null) {
try {
lavoroJL = new JLabel();
lavoroJL.setBounds(new Rectangle(325, 10, 120, 25));
lavoroJL.setName("lavoroJL");
lavoroJL.setPreferredSize(new Dimension(120, 25));
lavoroJL.setDisplayedMnemonic(KeyEvent.VK_UNDEFINE D);
lavoroJL.setText("Lavoro");
lavoroJL.setFont(new Font("Tahoma", Font.BOLD, 14));
cognomeJL = new JLabel();
cognomeJL.setBounds(new Rectangle(150, 10, 160, 25));
cognomeJL.setName("cognomeJL");
cognomeJL.setPreferredSize(new Dimension(160, 25));
cognomeJL.setDisplayedMnemonic(KeyEvent.VK_UNDEFIN ED);
cognomeJL.setText("Cognome");
cognomeJL.setFont(new Font("Tahoma", Font.BOLD, 14));
nomeJL = new JLabel();
nomeJL.setDisplayedMnemonic(KeyEvent.VK_UNDEFINED) ;
nomeJL.setName("nomeJL");
nomeJL.setFont(new Font("Tahoma", Font.BOLD, 14));
nomeJL.setSize(new Dimension(120, 25));
nomeJL.setLocation(new Point(15, 10));
nomeJL.setPreferredSize(new Dimension(120, 25));
nomeJL.setText("Nome");
jPanel2 = new JPanel();
jPanel2.setLayout(null);
jPanel2.setBounds(new Rectangle(1, 232, 462, 125));
jPanel2.setBackground(new Color(255, 255, 227));
jPanel2.add(nomeJL, null);
jPanel2.add(cognomeJL, null);
jPanel2.add(lavoroJL, null);
jPanel2.add(getNomeJTF(), null);
jPanel2.add(getCognomeJTF(), null);
jPanel2.add(getLavoroJTF(), null);
jPanel2.add(getOkJB(), null);
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return jPanel2;
}

/**
* This method initializes nomeJTF
*
* @return javax.swing.JTextField
*/
private JTextField getNomeJTF() {
if (nomeJTF == null) {
try {
nomeJTF = new JTextField();
nomeJTF.setBounds(new Rectangle(15, 45, 120, 25));
nomeJTF.setFont(new Font("Tahoma", Font.BOLD, 13));
nomeJTF.setName("nomeJTF");
nomeJTF.setPreferredSize(new Dimension(120, 25));
nomeJTF.setColumns(100);
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return nomeJTF;
}

/**
* This method initializes cognomeJTF
*
* @return javax.swing.JTextField
*/
private JTextField getCognomeJTF() {
if (cognomeJTF == null) {
try {
cognomeJTF = new JTextField();
cognomeJTF.setBounds(new Rectangle(150, 45, 160, 25));
cognomeJTF.setName("cognomeJTF");
cognomeJTF.setPreferredSize(new Dimension(160, 25));
cognomeJTF.setColumns(100);
cognomeJTF.setFont(new Font("Tahoma", Font.BOLD, 13));
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return cognomeJTF;
}

/**
* This method initializes lavoroJTF
*
* @return javax.swing.JTextField
*/
private JTextField getLavoroJTF() {
if (lavoroJTF == null) {
try {
lavoroJTF = new JTextField();
lavoroJTF.setBounds(new Rectangle(325, 45, 120, 25));
lavoroJTF.setName("lavoroJTF");
lavoroJTF.setPreferredSize(new Dimension(120, 25));
lavoroJTF.setColumns(100);
lavoroJTF.setFont(new Font("Tahoma", Font.BOLD, 13));
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return lavoroJTF;
}

/**
* This method initializes okJB
*
* @return javax.swing.JButton
*/
private JButton getOkJB() {
if (okJB == null) {
try {
okJB = new JButton();
okJB.setHorizontalTextPosition(SwingConstants.CENT ER);
okJB.setSize(new Dimension(130, 35));
okJB.setLocation(new Point(165, 80));
okJB.setName("okJB");
okJB.setPreferredSize(new Dimension(130, 35));
okJB.setText("OK");
okJB.setFont(new Font("Tahoma", Font.BOLD, 16));
okJB.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent e) {
processOK();
}
});
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return okJB;
}

/**
* @param args
*/
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
TabellaJFrame thisClass = new TabellaJFrame();
thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_ CLOSE);
thisClass.setVisible(true);
}
});
}

/**
* This is the default constructor
*/
public TabellaJFrame() {
super();
initialize();
}

/**
* This method initializes this
*
* @return void
*/
private void initialize() {
this.setContentPane(getJContentPane());
this.setTitle("Tabella");
this.setResizable(false);
this.setPreferredSize(new Dimension(470, 350));
this.setName("frame");
this.setMinimumSize(new Dimension(470, 350));
this.setMaximumSize(new Dimension(470, 350));
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
this.setBounds(new Rectangle(0, 0, 470, 390));
this.setVisible(true);
}

/**
* This method initializes jContentPane
*
* @return javax.swing.JPanel
*/
private JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new JPanel();
jContentPane.setLayout(null);
jContentPane.setName("jpanel");
jContentPane.setBackground(Color.white);
jContentPane.add(getJScrollPane(), null);
jContentPane.add(getJPanel2(), null);
}
return jContentPane;
}

private void processOK() {
GenericBean gb = new GenericBean();
gb.setNome(getNomeJTF().getText());
gb.setCognome(getCognomeJTF().getText());
gb.setLavoro(getLavoroJTF().getText());
data.add(gb);
}
}

------sorgente del bean utilizzato---

public class GenericBean {

private String nome = new String();
private String cognome = new String();
private String lavoro = new String();

/**
*
*/
public GenericBean(String nome, String cognome, String lavoro) {
super();
this.nome = nome;
this.cognome = cognome;
this.lavoro = lavoro;
}

public GenericBean() {
super();
}

/**
* @return the nome
*/
public String getNome() {
return nome;
}

/**
* @param nome
* the nome to set
*/
public void setNome(String nome) {
this.nome = nome;
}

/**
* @return the cognome
*/
public String getCognome() {
return cognome;
}

/**
* @param cognome
* the cognome to set
*/
public void setCognome(String cognome) {
this.cognome = cognome;
}

/**
* @return the lavoro
*/
public String getLavoro() {
return lavoro;
}

/**
* @param lavoro
* the lavoro to set
*/
public void setLavoro(String lavoro) {
this.lavoro = lavoro;
}

}

qualcuno di voi può aiutarmi a risolvere questo problema??
grazie!