Insertion de caractère dans un JPasswordField

lu,

ce petit bout de code éxécutable pourrait t'aider ( je sais pas s'il existe une solution plus simple)...
Code:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
 
public class Main
{
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
 
        final JPasswordField field = new JPasswordField(15);
        final JLabel         label = new JLabel("");
        label.setHorizontalAlignment(SwingConstants.LEFT);
 
        final List<JButton> buttons = new ArrayList<JButton>(10);
 
        ActionListener listener = new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {   if ( e.getSource() instanceof JButton )
                {   int index = buttons.indexOf(e.getSource());
 
                    Document doc = field.getDocument();
 
                    try
                    {   doc.insertString(doc.getLength(), Integer.toString(index), null); }
                    catch (BadLocationException ex)
                    {   ex.printStackTrace(); }
                }
            }
        };
 
        /** pour montrer que ca alimente bien la zone de password */
        field.getDocument().addDocumentListener(new DocumentListener()
        {
            public void changedUpdate(DocumentEvent e)
            {   }
 
            public void insertUpdate(DocumentEvent e)
            {   this.updateLabel(e.getDocument()); }
 
            public void removeUpdate(DocumentEvent e)
            {   this.updateLabel(e.getDocument()); }
 
            /** méthode permettant de mettre à jour le label en fonction du contenu du document */
            private void updateLabel(Document document)
            {
                try
                {   label.setText(document.getText(0, document.getLength())); }
                catch (BadLocationException ex)
                {   ex.printStackTrace(); }
            }
        });
 
        JButton button0 = new JButton("0");
        buttons.add(button0);
        JButton button1 = new JButton("1");
        buttons.add(button1);
        JButton button2 = new JButton("2");
        buttons.add(button2);
        JButton button3 = new JButton("3");
        buttons.add(button3);
        JButton button4 = new JButton("4");
        buttons.add(button4);
        JButton button5 = new JButton("5");
        buttons.add(button5);
        JButton button6 = new JButton("6");
        buttons.add(button6);
        JButton button7 = new JButton("7");
        buttons.add(button7);
        JButton button8 = new JButton("8");
        buttons.add(button8);
        JButton button9 = new JButton("9");
        buttons.add(button9);
 
        JPanel panelButton = new JPanel(new GridLayout(4, 3));
        panelButton.add(button7);
        panelButton.add(button8);
        panelButton.add(button9);
        panelButton.add(button4);
        panelButton.add(button5);
        panelButton.add(button6);
        panelButton.add(button1);
        panelButton.add(button2);
        panelButton.add(button3);
        panelButton.add(button0);
 
        for(int i = 0; i < buttons.size(); i++)
        {   buttons.get(i).addActionListener(listener); }
 
        JPanel panel = new JPanel(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.gridx = 1;
        gbc.gridy = 1;
        gbc.fill  = gbc.HORIZONTAL;
        panel.add(field, gbc);
        GridBagConstraints gbc2 = new GridBagConstraints();
        gbc2.gridx = 1;
        gbc2.gridy = 2;
        gbc2.fill  = gbc.HORIZONTAL;
        panel.add(label, gbc2);
        GridBagConstraints gbc3 = new GridBagConstraints();
        gbc3.gridx = 1;
        gbc3.gridy = 3;
        gbc3.fill  = gbc.BOTH;
        gbc3.weighty = 1.0f;
        panel.add(panelButton, gbc3);
 
        frame.getContentPane().add(panel);
 
        frame.pack();
        frame.setVisible(true);
    }
}