Bonjour,
Je n'arrive pas à insérer une nouvelle ligne dans une JTable contenue dans un applet. J'ai crée un bouton "Nouveau" qui sert à créer une nouvelle ligne dans la JTable. Voici le code :
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
 
package btm;
 
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JTable;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Vector;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.event.*;
import javax.swing.table.*;
import btm.Membre;
 
 
public class AfficheMembres extends JApplet implements TableModelListener, ActionListener {
 
	private static final long serialVersionUID = 1L;
	private JTable table;
 
	public class CenterTableCellRenderer extends DefaultTableCellRenderer {
 
		private static final long serialVersionUID = 1L;
 
		public CenterTableCellRenderer() {
	        setHorizontalAlignment(CENTER);
	        setVerticalAlignment(CENTER);      
		}
	}
 
 
	public AfficheMembres() {
        super();
 
        JPanel panel = new JPanel();
        panel.setBackground(Color.gray);
        FlowLayout flowLayout = (FlowLayout) panel.getLayout();
		flowLayout.setAlignment(FlowLayout.LEFT);
        this.setContentPane(panel);               
        this.setVisible(true);
 
        /* Obtenir les données */
        new TraitementXML();
        Object[][] donnees;
        Vector<Membre> membres = TraitementXML.listeMembres();       
 
        String[] entetes = {"N°", "Prénom", "Nom", "Tél", "e-mail","Actif"};
 
        donnees = new Object[membres.size()][entetes.length];
 
    	for(int i=0;i<membres.size();i++)
    	{
    		donnees[i][0] = i+1;
    		donnees[i][1] = membres.get(i).prenom;
    		donnees[i][2] = membres.get(i).nom;
    		donnees[i][3] = membres.get(i).tel;
    		donnees[i][4] = membres.get(i).mail;
    		donnees[i][5] = Boolean.valueOf(membres.get(i).actif).booleanValue();
    	} 
 
    	 /* Créer la table */
    	 DefaultTableModel tableModel = new DefaultTableModel(donnees, entetes);
    	 tableModel.addTableModelListener( this );
         JTable table = new JTable(tableModel) {
 
           private static final long serialVersionUID = 1L;
 
           @SuppressWarnings({ "unchecked", "rawtypes" })
           @Override
           public Class getColumnClass(int column) {
               switch (column) {
               	   case 0:
              	 	return Integer.class;
                   case 1:
                  	 return String.class;
                   case 2:
                     return String.class;
                   case 3:
                  	 return String.class;
                   case 4:
                  	 return String.class;
                   case 5:
                  	 return Boolean.class;     
               }
			 return null;
           }
         };
 
         /* Attributs de la table */
         table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
         TableColumn column = null;
         for (int i = 0; i < 6; i++) {
             column = table.getColumnModel().getColumn(i);
             switch (i) {
         	 case 0:
         		column.setPreferredWidth(20);
         		break;
         	 case 1:
         		column.setPreferredWidth(100);
         		break;
         	 case 2:
         		column.setPreferredWidth(120);
         		break;
         	 case 3:
         		column.setPreferredWidth(100);
         		break;
         	 case 4:
         		column.setPreferredWidth(150);
         		break;
         	 case 5:
         		column.setPreferredWidth(30);
         		break;
             }
         }
 
         table.getColumnModel().getColumn(0).setCellRenderer(new CenterTableCellRenderer());
 
         /* Ajout d'autres composants */
 
         JScrollPane scrollPane = new JScrollPane(table);
         scrollPane.setPreferredSize(new Dimension(538, 120));
         panel.add(scrollPane);
 
         JButton btnNouveau = new JButton("Nouveau");
 		 panel.add(btnNouveau);
 		 btnNouveau.addActionListener(this);
 
    }
 
	public void tableChanged(TableModelEvent e) 
    {
		@SuppressWarnings("unused")
		DefaultTableModel model = (DefaultTableModel)e.getSource();
		int changedRow = e.getFirstRow();		
		int changedCol = e.getColumn();	
		System.out.println("Col : " + changedCol + " Ligne " + changedRow);
    }
 
 
	public void actionPerformed(ActionEvent e) {
	((DefaultTableModel)table.getModel()).addRow(new Object[]{null, null, null, null, null, null});
	//System.out.println("Actif ");	
	}
 
 
}
et l'erreur à l'execution :
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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
 
Exception in thread "AWT-EventQueue-1" java.lang.NullPointerException
	at btm.AfficheMembres.actionPerformed(AfficheMembres.java:143)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$200(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)