HI, i have this two funcion: i want put on the client property of "pulsante"
the array "m". How can I put the array?

pulsante.putClientProperty(PROP_ARRAY, ????????????);<=============

and how can i get in a int[][] the array "m" in the ActionListener?

int[][] array=  ((int[][])
pressedButton.getClientProperty(PROP_ARRAY)).intValue();  <=====?????

thx!!!!

private void CreateRamdom (int[][] m){
JPanel pannello = new JPanel();
pannello.setLayout(new GridLayout(N, N));
   Random generator = new Random();

    for (int i = 0; i < N; i++)
      for (int j = 0; j < N; j++)
        mat[i][j] = generator.nextInt(MAXELEM);

    for (int i = 0; i < N; i++)
      for (int j = 0; j < N; j++)
      {
        JButton pulsante = new JButton(Integer.toString(mat[i][j]));
        jb[i][j] = pulsante;
        // XXX pulsante.addMouseListener(leftListener);

        // Set row and col index of the button; used by buttonListener
        pulsante.putClientProperty(PROP_MAT_ROW, new Integer(i));
        pulsante.putClientProperty(PROP_MAT_COL, new Integer(j));
        pulsante.putClientProperty(PROP_ARRAY, int[N][N](m));

        // Add buttonListener as ActionListener
        pulsante.addActionListener(buttonListener);
      }

     for (int i = 0; i < jb.length; i++)
             for (int j = 0; j < N; j++)
                    pannello.add(jb[i][j]);
                       getContentPane().add(pannello, BorderLayout.CENTER);
     }

private ActionListener buttonListener = new ActionListener()
  {
    public void actionPerformed(ActionEvent e)
    {
      JButton pressedButton = (JButton) e.getSource();

      // Get row and column index from the button
      int row =
        ((Integer)
pressedButton.getClientProperty(PROP_MAT_ROW)).intValue();
      int col =
        ((Integer)
pressedButton.getClientProperty(PROP_MAT_COL)).intValue();

      // matrix value
      int value = mat[row][col];

      String input =
        JOptionPane.showInputDialog(
          QuadratoFrame.this,
          "Inserisci un nuovo valore:",
          Integer.toString(value));
      if (input != null)
      {
        // input != null: user did not cancel the dialog
        try
        {
          // Parse input to see if it contains a valid integer;
          // if it doesn't, parseInt throws a NumberFormatException.
          // Trim input to remove leading and trailing spaces
          value = Integer.parseInt(input.trim());

          // Test if value is in the appropriate range
          if (value >= 0 && value < MAXELEM)
          {
            // Yep: change matrix...
            mat[row][col] = value;
            // ...and the text of the button
            pressedButton.setText(Integer.toString(value));
          }
          else
          {
            // Value was not in the range
            throw new NumberFormatException(
              "value must be >= 0 and < " + MAXELEM);
          }
        }
        catch (NumberFormatException ex)
        {
          // Input was invalid: show error dialog
          JOptionPane.showMessageDialog(
            QuadratoFrame.this,
            "Valore inserito: " + input + "\n" + ex.getMessage(),
            "hai inserito un valore non valido, inserire un intero",
            JOptionPane.ERROR_MESSAGE);
        }
      }
    }
  };