erreur d'exécution

**sarrmaster** · 03/04/2018, 15h39

Salut à vous,
Je suis nouveau sur ce forum et cela un bon moment que je travaille sur un projet mais je me suis planté.
Quand j'exécute le programme sous NetBeans une erreur s'affiche

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: Cannot cast javax.swing.JLabel to java.awt.Color

at java.lang.Class.cast(Class.java:3369)
at org.jdesktop.beansbinding.Binding.convertForward(Binding.java:1312)
at org.jdesktop.beansbinding.Binding.getSourceValueForTarget(Binding.java:844)
at org.jdesktop.beansbinding.Binding.refreshUnmanaged(Binding.java:1222)
at org.jdesktop.beansbinding.Binding.refresh(Binding.java:1207)
at org.jdesktop.beansbinding.AutoBinding.tryRefreshThenSave(AutoBinding.java:162)
at org.jdesktop.beansbinding.AutoBinding.bindImpl(AutoBinding.java:199)
at org.jdesktop.beansbinding.Binding.bindUnmanaged(Binding.java:959)
at org.jdesktop.beansbinding.Binding.bind(Binding.java:944)
at org.jdesktop.beansbinding.BindingGroup.bind(BindingGroup.java:143)
at Gestion_registre.initComponents(Gestion_registre.java:279)
at Gestion_registre.<init>(Gestion_registre.java:28)
at Gestion_registre$3.run(Gestion_registre.java:340)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82

Merci

**joel.drigo** · 03/04/2018, 15h47

Salut,

L'erreur est explicite : Cannot cast javax.swing.JLabel to java.awt.Color. Dans le binding, il y a un javax.swing.JLabel alors qu'il devrait y avoir un java.awt.Color. Sans code, impossible dans dire plus.

**sarrmaster** · 03/04/2018, 16h15

salut joel et merci pour l'attention
voici le code source

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.JOptionPane;
import javax.swing.table.DefaultTableModel;
 
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
 
/**
 *
 * @author Dell
 */
public class Gestion_registre extends javax.swing.JFrame {
 
    /**
     * Creates new form Gestion_registre
     */
    Connecter conn=new Connecter ();
    Statement stm;
    ResultSet Rs;
    DefaultTableModel model = new DefaultTableModel();
    public Gestion_registre() {
        initComponents();
        model.addColumn("id");
model.addColumn("nom");
model.addColumn("prenom");
model.addColumn("sexe") ;
model.addColumn("pere");
model.addColumn("mere");
model.addColumn("date");
model.addColumn("lieu");
model.addColumn("heure");
try {
Statement stm =conn.createStatement();
ResultSet Rs =stm.executeQuery("Select * from etudient");
while(Rs.next()){
model.addRow(new Object[]{Rs.getString("id"),Rs.getString("Nom"),Rs.getString("prenom"),Rs.getString("sexe"),
    Rs.getString("pere"),Rs.getString("mere"),Rs.getString("date"),Rs.getString("lieu"),Rs.getString("heure")});
 
}
}catch(SQLException e){System.err.println(e);}
 
tble.setModel(model);
    }
 
    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
        bindingGroup = new org.jdesktop.beansbinding.BindingGroup();
 
        jSpinner1 = new javax.swing.JSpinner();
        jLabel11 = new javax.swing.JLabel();
        jPanel1 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jLabel6 = new javax.swing.JLabel();
        jLabel7 = new javax.swing.JLabel();
        jLabel8 = new javax.swing.JLabel();
        txtid = new javax.swing.JTextField();
        txtmer = new javax.swing.JTextField();
        txtdat = new javax.swing.JTextField();
        txtheur = new javax.swing.JTextField();
        txtper = new javax.swing.JTextField();
        txtno = new javax.swing.JTextField();
        txtpr = new javax.swing.JTextField();
        jPanel2 = new javax.swing.JPanel();
        txtlie = new javax.swing.JComboBox<>();
        jLabel10 = new javax.swing.JLabel();
        txtsex = new javax.swing.JComboBox<>();
        jScrollPane1 = new javax.swing.JScrollPane();
        tble = new javax.swing.JTable();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();
        jButton4 = new javax.swing.JButton();
        jButton5 = new javax.swing.JButton();
        jTextField1 = new javax.swing.JTextField();
        jLabel9 = new javax.swing.JLabel();
        jButton9 = new javax.swing.JButton();
 
        jLabel11.setIcon(new javax.swing.ImageIcon(getClass().getResource("/icone/dra sen.png"))); // NOI18N
        jLabel11.setText("jLabel11");
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setBackground(java.awt.Color.white);
        setForeground(new java.awt.Color(102, 0, 204));
        setMinimumSize(new java.awt.Dimension(500, 600));
        getContentPane().setLayout(null);
 
        org.jdesktop.beansbinding.Binding binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, jLabel11, org.jdesktop.beansbinding.ObjectProperty.create(), jPanel1, org.jdesktop.beansbinding.BeanProperty.create("background"));
        bindingGroup.addBinding(binding);
 
        jPanel1.setLayout(null);
 
        jLabel1.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
        jLabel1.setText("id:");
        jPanel1.add(jLabel1);
        jLabel1.setBounds(10, 6, 24, 17);
 
        jLabel2.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
        jLabel2.setText("Nom:");
        jPanel1.add(jLabel2);
        jLabel2.setBounds(10, 40, 44, 17);
 
        jLabel3.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
        jLabel3.setText("Prenom:");
        jPanel1.add(jLabel3);
        jLabel3.setBounds(10, 70, 53, 26);
 
        jLabel4.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
        jLabel4.setText("pere:");
        jPanel1.add(jLabel4);
        jLabel4.setBounds(10, 120, 41, 26);
 
        jLabel5.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
        jLabel5.setText("mere:");
        jPanel1.add(jLabel5);
        jLabel5.setBounds(10, 160, 41, 20);
 
        jLabel6.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
        jLabel6.setText("date:");
        jPanel1.add(jLabel6);
        jLabel6.setBounds(10, 190, 41, 17);
 
        jLabel7.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
        jLabel7.setText("lieu:");
        jPanel1.add(jLabel7);
        jLabel7.setBounds(20, 230, 41, 17);
 
        jLabel8.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
        jLabel8.setText("heure:");
        jPanel1.add(jLabel8);
        jLabel8.setBounds(10, 260, 41, 17);
 
        txtid.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
        txtid.setForeground(new java.awt.Color(51, 0, 255));
        jPanel1.add(txtid);
        txtid.setBounds(70, 10, 120, 20);
 
        txtmer.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
        jPanel1.add(txtmer);
        txtmer.setBounds(70, 160, 120, 20);
 
        txtdat.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
        jPanel1.add(txtdat);
        txtdat.setBounds(70, 190, 120, 20);
 
        txtheur.setBackground(new java.awt.Color(240, 240, 240));
        txtheur.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
        jPanel1.add(txtheur);
        txtheur.setBounds(70, 260, 120, 20);
 
        txtper.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
        jPanel1.add(txtper);
        txtper.setBounds(70, 130, 120, 20);
 
        txtno.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
        jPanel1.add(txtno);
        txtno.setBounds(70, 40, 120, 20);
 
        txtpr.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
        jPanel1.add(txtpr);
        txtpr.setBounds(70, 70, 120, 20);
 
        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 100, Short.MAX_VALUE)
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 100, Short.MAX_VALUE)
        );
 
        jPanel1.add(jPanel2);
        jPanel2.setBounds(290, 120, 100, 100);
 
        txtlie.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Thies", "Mbour", "Tivaoune", "Mboro", "Pout" }));
        jPanel1.add(txtlie);
        txtlie.setBounds(70, 220, 120, 20);
 
        jLabel10.setFont(new java.awt.Font("Tahoma", 1, 12)); // NOI18N
        jLabel10.setText("Sexe:");
        jPanel1.add(jLabel10);
        jLabel10.setBounds(10, 100, 40, 14);
 
        txtsex.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Masculin", "Feminin" }));
        jPanel1.add(txtsex);
        txtsex.setBounds(70, 100, 120, 20);
 
        getContentPane().add(jPanel1);
        jPanel1.setBounds(10, 80, 200, 290);
 
        tble.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        tble.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null}
            },
            new String [] {
                "id", "Prenom", " Nom", "Sexe", "Pere", "Mere", "Date", "Heure"
            }
        ));
        tble.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                tbleMouseClicked(evt);
            }
        });
        jScrollPane1.setViewportView(tble);
 
        getContentPane().add(jScrollPane1);
        jScrollPane1.setBounds(0, 450, 960, 20);
 
        jButton1.setFont(new java.awt.Font("Verdana", 1, 14)); // NOI18N
        jButton1.setIcon(new javax.swing.ImageIcon("C:\\Users\\Dell\\Documents\\NetBeansProjects\\jav_registre\\src\\icone\\modifier.png")); // NOI18N
        jButton1.setText("Actualiser");
        getContentPane().add(jButton1);
        jButton1.setBounds(180, 400, 150, 30);
 
        jButton2.setFont(new java.awt.Font("Verdana", 1, 14)); // NOI18N
        jButton2.setIcon(new javax.swing.ImageIcon("C:\\Users\\Dell\\Documents\\NetBeansProjects\\jav_registre\\src\\icone\\supprimer.png")); // NOI18N
        jButton2.setText("Supprimer");
        getContentPane().add(jButton2);
        jButton2.setBounds(540, 400, 160, 30);
 
        jButton3.setFont(new java.awt.Font("Verdana", 1, 14)); // NOI18N
        jButton3.setIcon(new javax.swing.ImageIcon("C:\\Users\\Dell\\Documents\\NetBeansProjects\\jav_registre\\src\\icone\\actualiser.png")); // NOI18N
        jButton3.setText("Modifier");
        getContentPane().add(jButton3);
        jButton3.setBounds(360, 400, 150, 30);
 
        jButton4.setFont(new java.awt.Font("Verdana", 1, 12)); // NOI18N
        jButton4.setIcon(new javax.swing.ImageIcon("C:\\Users\\Dell\\Documents\\NetBeansProjects\\jav_registre\\src\\icone\\rechercher.png")); // NOI18N
        jButton4.setText("Rechercher");
        jButton4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton4ActionPerformed(evt);
            }
        });
        getContentPane().add(jButton4);
        jButton4.setBounds(460, 350, 170, 30);
 
        jButton5.setFont(new java.awt.Font("Verdana", 1, 14)); // NOI18N
        jButton5.setIcon(new javax.swing.ImageIcon("C:\\Users\\Dell\\Documents\\NetBeansProjects\\jav_registre\\src\\icone\\nouveau.png")); // NOI18N
        jButton5.setText("Ajouter");
        getContentPane().add(jButton5);
        jButton5.setBounds(20, 400, 130, 30);
 
        jTextField1.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
        getContentPane().add(jTextField1);
        jTextField1.setBounds(280, 350, 160, 30);
 
        jLabel9.setFont(new java.awt.Font("Times New Roman", 1, 48)); // NOI18N
        jLabel9.setText("Gestion Des Registres");
        getContentPane().add(jLabel9);
        jLabel9.setBounds(170, 10, 450, 50);
 
        jButton9.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
        jButton9.setText("Realiser");
        getContentPane().add(jButton9);
        jButton9.setBounds(730, 400, 150, 30);
 
        bindingGroup.bind();
 
        pack();
    }// </editor-fold>                        
private void deplace(int i){
       try {     //i represente les ligne 
 
          txtid.setText(model.getValueAt (i, 0).toString());
      // txttp.setSelectedItem(dt.getValueAt (i, 5).toString());
        txtno.setText(model.getValueAt (i, 1).toString());
        // txtb.setSelectedItem(dt.getValueAt (i, 2).toString());
          txtpr.setText(model.getValueAt (i, 2).toString());
         txtsex.setSelectedItem(model.getValueAt (i, 3).toString()); 
      txtper.setText(model.getValueAt (i, 4).toString());
      txtmer.setText(model.getValueAt (i, 5).toString());
      txtdat.setText(model.getValueAt (i, 6).toString());
      txtlie.setSelectedItem(model.getValueAt (i, 7).toString());
      txtheur.setText(model.getValueAt (i, 8).toString());
 
 
       }catch (Exception e){ JOptionPane.showMessageDialog(null,"erreur de deplacement de message !!!!! "+e.getMessage());}
      }
    private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
    }                                        
 
    private void tbleMouseClicked(java.awt.event.MouseEvent evt) {                                  
try {  int i=tble.getSelectedRow();
            deplace(i);
        }
        catch (Exception e){JOptionPane.showMessageDialog(null,"erreur selectionne\n"+e.getMessage());}        // TODO add your handling code here:
    }                                 
 
 
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see <a href="http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html" target="_blank">http://download.oracle.com/javase/tu...feel/plaf.html</a> 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Gestion_registre.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Gestion_registre.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Gestion_registre.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Gestion_registre.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>
 
        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Gestion_registre().setVisible(true);
            }
        });
    }
 
    // Variables declaration - do not modify                     
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton4;
    private javax.swing.JButton jButton5;
    private javax.swing.JButton jButton9;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel10;
    private javax.swing.JLabel jLabel11;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JLabel jLabel9;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JSpinner jSpinner1;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTable tble;
    private javax.swing.JTextField txtdat;
    private javax.swing.JTextField txtheur;
    private javax.swing.JTextField txtid;
    private javax.swing.JComboBox<String> txtlie;
    private javax.swing.JTextField txtmer;
    private javax.swing.JTextField txtno;
    private javax.swing.JTextField txtper;
    private javax.swing.JTextField txtpr;
    private javax.swing.JComboBox<String> txtsex;
    private org.jdesktop.beansbinding.BindingGroup bindingGroup;
    // End of variables declaration                   
 
 
    }

merci

**joel.drigo** · 03/04/2018, 16h53

Le problème vient de cette ligne :

Code :

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org.jdesktop.beansbinding.Binding binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, jLabel11, org.jdesktop.beansbinding.ObjectProperty.create(), jPanel1, org.jdesktop.beansbinding.BeanProperty.create("background"));

La méthode setBackground de JPanel attends un java.awt.Color, par un JLabel.

N'étant pas très sûr de ce que tu veux faire et ne connaissant pas particulièrement le fonctionnement de cette bibliothèque, je dirais à priori que tu devrais plutôt essayer pluttôt

Code :

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org.jdesktop.beansbinding.Binding binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, jLabel11, org.jdesktop.beansbinding.BeanProperty.create("background"), jPanel1, org.jdesktop.beansbinding.BeanProperty.create("background"));

Maintenant, je ne sais pas trop pourquoi tu cherches à lier les background d'un JPanel et d'un JLabel. Un JLabel est par défaut transparent, donc son background sera de fait celui du JPanel dans lequel il se trouve.

**sarrmaster** · 03/04/2018, 21h08

salut je pense que vous avez parce que j'essaie de remplir le fond avec jlabel 11 et depuis sa ne marche pas

erreur d'exécution

AWT/Swing Java

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