Insertion d'une ligne vierge dans une JTable contenue dans un Applet
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:
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|
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:
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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) |
