Probléme avec JFileChooser
Bonjour à tous,
Je suis en train de développer une petite application en java, et j'ai une erreur avec un JFileChooser...
Je ne comprend vraiment pas pourquoi le code bug, le peu qu'il y a ne me parait pas incorrect.
Voilà le code de ma classe
Code:
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|
import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Fenetre extends JFrame {
private JPanel jContentPane;
private JLabel jLabelFichier;
private JTextField jTextFieldAdresseDBF;
private JButton jButton;
public Fenetre(){
//Théme de la fenetre (ici Windows XP)
String lnfName = "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
try {
UIManager.setLookAndFeel(lnfName);
SwingUtilities.updateComponentTreeUI(this);
}
catch (ClassNotFoundException e) {e.printStackTrace();}
catch (InstantiationException e) {e.printStackTrace();}
catch (IllegalAccessException e) {e.printStackTrace();}
catch (UnsupportedLookAndFeelException e) {e.printStackTrace();}
//Attributs de la fenêtre
this.setSize(300, 150);
this.setTitle("Mise aux normes fichier DBF");
this.setResizable(true);
this.setLocationRelativeTo(null); //Postionnement au centre
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Fermeture lorsque l'on clique sur la croix
this.setContentPane(getJContentPane()); //déclaration du contentPane
//Attribut du content pane
jContentPane.setBackground(Color.decode("#A3CCED")); //Modification de l'écran de fond
//Configuration du Jpanel
jContentPane.setBorder(BorderFactory.createTitledBorder("Sélection du fichier"));
jContentPane.setLayout(new GridBagLayout());
jContentPane.setBackground(Color.decode("#A3CCED"));
jContentPane.setVisible(true);
//Configuration du layout
GridBagConstraints gbcMajZip = new GridBagConstraints();
gbcMajZip.anchor = GridBagConstraints.BASELINE_LEADING;
//Configuration des composants
jLabelFichier = new JLabel("Fichier");
jTextFieldAdresseDBF = new JTextField(15);
jButton = new JButton("Sélection");
//Ajout des composants
jContentPane.add(jLabelFichier);
jContentPane.add(jTextFieldAdresseDBF);
jContentPane.add(jButton);
this.setVisible(true);
//Listener
jButton.addActionListener(new jButtonListener());
}
private JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new JPanel();
}
return jContentPane;
}
/**
* classe qui écoute notre bouton du fichier dbf
*/
class jButtonListener implements ActionListener{
public void actionPerformed(ActionEvent arg0){
JFileChooser jFileChooser = new JFileChooser();
jFileChooser.setApproveButtonText("OK");
jFileChooser.setVisible(true);
jFileChooser.setSelectedFile(new File(""));
if (jFileChooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION){
//adresseMAJZip = (jFileChooserMAJZip.getSelectedFile().getAbsolutePath());
jTextFieldAdresseDBF.setText((jFileChooser.getSelectedFile().getAbsolutePath()));
}
}
}
} |
Et voici l'erreur retournée lors de l'éxecution de ma classe main (qui instancie un nouvel objet Fenetre).
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| Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at javax.swing.ImageIcon.<init>(ImageIcon.java:161)
at javax.swing.ImageIcon.<init>(ImageIcon.java:147)
at sun.swing.WindowsPlacesBar.<init>(WindowsPlacesBar.java:82)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.updateUseShellFolder(WindowsFileChooserUI.java:508)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.installComponents(WindowsFileChooserUI.java:190)
at javax.swing.plaf.basic.BasicFileChooserUI.installUI(BasicFileChooserUI.java:136)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.installUI(WindowsFileChooserUI.java:127)
at javax.swing.JComponent.setUI(JComponent.java:668)
at javax.swing.JFileChooser.updateUI(JFileChooser.java:1762)
at javax.swing.JFileChooser.setup(JFileChooser.java:360)
at javax.swing.JFileChooser.<init>(JFileChooser.java:333)
at javax.swing.JFileChooser.<init>(JFileChooser.java:286)
at Fenetre$jButtonListener.actionPerformed(Fenetre.java:90)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
at java.awt.Component.processMouseEvent(Component.java:6038)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3260)
at java.awt.Component.processEvent(Component.java:5803)
at java.awt.Container.processEvent(Container.java:2058)
at java.awt.Component.dispatchEventImpl(Component.java:4410)
at java.awt.Container.dispatchEventImpl(Container.java:2116)
at java.awt.Component.dispatchEvent(Component.java:4240)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3986)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)
at java.awt.Container.dispatchEventImpl(Container.java:2102)
at java.awt.Window.dispatchEventImpl(Window.java:2429)
at java.awt.Component.dispatchEvent(Component.java:4240)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121) |
Une idée du probléme?
