catch (Exception e) {System.err.println (e)}

Bonjour à tous

Je suis un débutant dans la programmation.
En effet, j'ai un soucis avec le programme que je suis en train de confectionner.
Lorsque je compile mon projet voila le résultat qui s'affiche (voir les fichiers joints).

Merci de m'aider

Salut,

Déjà, il serait plus simple et pratique pour tout le monde que tu copies ton code en texte dans le message, en procédant comme indiqué ici pour le baliser.

Ensuite, est-ce que tu as bien inclus le jar du pilote mysql dans le classpath de ton projet ? Et enfin, il faudrait qu'on voit un peu le code d'initialisation du pilote, la connexion tout ça, la stacktrace complète de l'erreur (il vaut mieux que tu fasses e.printStackTrace(); que System.err.println(e), parce que ça permet de voir plus précisemment l'endroit où arrive l'erreur (le numéro de ligne par exemple), et la ligne qui correspond au numéro de ligne dans la stacktrace justement.

Code:

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/*  * 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.  */ package aplication_java_mysql;   import java.sql.*; import javax.swing.table.DefaultTableModel;   /**  * @author Gustave COULIBALY  */ public class Gestion_des_notes extends javax.swing.JFrame {   /**      * Creates new form Gestion_des_notes      */ Connecter conn=new Connecter(); Statement stm; ResultSet Rs; DefaultTableModel model=new DefaultTableModel(); @SuppressWarnings("UseSpecificCatch") public Gestion_des_notes() { initComponents();   model.addColumn("id"); model.addColumn("Nom"); model.addColumn("Prenoms"); model.addColumn("Filiere"); model.addColumn("Note"); try{ stm=conn.obtenirconnexion().createStatement(); ResultSet Rs=stm.executeQuery("select * from etudiants"); while ( Rs.next()){ model.addRow(new Object[]{ Rs.getString("id"), Rs.getString("Nom"), Rs.getString("Prenoms"), Rs.getString("Filiere"), Rs.getString("Note")});   } }catch(Exception 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() {   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(); txtnot = new java.awt.TextField(); txtno = new java.awt.TextField(); txtid = new java.awt.TextField(); txtpr = new java.awt.TextField(); txtfil = new javax.swing.JComboBox<>(); jScrollPane1 = new javax.swing.JScrollPane(); tble = new javax.swing.JTable(); jButton2 = new javax.swing.JButton(); jButton5 = new javax.swing.JButton(); jButton6 = new javax.swing.JButton(); jButton7 = new javax.swing.JButton(); jButton8 = new javax.swing.JButton(); jButton9 = new javax.swing.JButton(); textField6 = new java.awt.TextField();   setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); getContentPane().setLayout(null);   jLabel1.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N jLabel1.setText("id :");   jLabel2.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N jLabel2.setText("Nom :");   jLabel3.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N jLabel3.setText("Prenoms :");   jLabel4.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N jLabel4.setText("Filiere :");   jLabel5.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N jLabel5.setText("Note :");   txtnot.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N txtnot.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { txtnotActionPerformed(evt); } });   txtno.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N txtno.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { txtnoActionPerformed(evt); } });   txtid.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N txtid.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { txtidActionPerformed(evt); } });   txtpr.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N txtpr.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { txtprActionPerformed(evt); } });   txtfil.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N txtfil.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "ANG", "FR", "HG", "PC", "SVT", "MATHS", "ESP", "ALL", "EPS", "PHILO", "INFO" }));   javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1); jPanel1.setLayout(jPanel1Layout); jPanel1Layout.setHorizontalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup() .addGap(23, 23, 23) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup() .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(txtno, javax.swing.GroupLayout.DEFAULT_SIZE, 230, Short.MAX_VALUE)) .addGroup(jPanel1Layout.createSequentialGroup() .addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(txtpr, javax.swing.GroupLayout.DEFAULT_SIZE, 230, Short.MAX_VALUE)) .addGroup(jPanel1Layout.createSequentialGroup() .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addComponent(txtfil, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) .addGroup(jPanel1Layout.createSequentialGroup() .addComponent(jLabel5, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(txtnot, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) .addGroup(jPanel1Layout.createSequentialGroup() .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(txtid, javax.swing.GroupLayout.DEFAULT_SIZE, 230, Short.MAX_VALUE))) .addContainerGap()) ); jPanel1Layout.setVerticalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup() .addGap(22, 22, 22) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(jLabel1) .addComponent(txtid, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGap(22, 22, 22) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup() .addComponent(jLabel2) .addGap(22, 22, 22) .addComponent(jLabel3) .addGap(21, 21, 21) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel4) .addComponent(txtfil, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGap(18, 18, 18) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jLabel5, javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(txtnot, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))) .addGroup(jPanel1Layout.createSequentialGroup() .addComponent(txtno, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(txtpr, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))) .addContainerGap(26, Short.MAX_VALUE)) );   getContentPane().add(jPanel1); jPanel1.setBounds(36, 31, 340, 230);   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} }, new String [] { "Title 1", "Title 2", "Title 3", "Title 4", "Title 5" } )); 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(382, 20, 490, 260);   jButton2.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N jButton2.setText("Rechercher"); getContentPane().add(jButton2); jButton2.setBounds(180, 370, 110, 30);   jButton5.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N jButton5.setText("Ajouter"); jButton5.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton5ActionPerformed(evt); } }); getContentPane().add(jButton5); jButton5.setBounds(50, 320, 110, 30);   jButton6.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N jButton6.setText("Actualiser"); getContentPane().add(jButton6); jButton6.setBounds(170, 320, 110, 30);   jButton7.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N jButton7.setText("Supprimer"); getContentPane().add(jButton7); jButton7.setBounds(290, 320, 110, 30);   jButton8.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N jButton8.setText("Réaliser par"); getContentPane().add(jButton8); jButton8.setBounds(420, 320, 160, 30);   jButton9.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N jButton9.setText("Modifier"); getContentPane().add(jButton9); jButton9.setBounds(50, 370, 110, 30);   textField6.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N textField6.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { textField6ActionPerformed(evt); } }); getContentPane().add(textField6); textField6.setBounds(310, 370, 100, 30);   pack(); }// </editor-fold> private void deplace(int i){ try{ txtid.setText(model.getValueAt(i,0).toString()); txtno.setText(model.getValueAt(i,1).toString()); txtpr.setText(model.getValueAt(i,2).toString()); txtfil.setSelectedItem(model.getValueAt(i,3).toString()); txtnot.setText(model.getValueAt(i,4).toString()); }catch(Exception e){System.err.println(e) JOpionPane.showMessageDialog(null,"Erreur de deplacement"+e.getLocalizedMessage());} } private void txtnotActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: }   private void txtnoActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: }   private void txtidActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: }   private void txtprActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: }   private void textField6ActionPerformed(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){JOpionPane.showMessageDialog(null,"Erreur de deplacement"+e.getLocalizedMessage());} // TODO add your handling code here: }   private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) { String id=txtid.getText(); String Nom=txtno.getText(); String Prenoms=txtpr.getText(); String Filiere=txtfil.getSelectItem().toString(); String Note=txtnot.getText(); String requete="insert into etudiants(id,Nom,Prenoms,Filiere,Note)VALUES('"+ id+"','"+Nom+"','"+Prenoms+"','"+Filiere+"','"+Note+"')"; try{   }catch (Exception ex){JOptionPane.showMessageDialog(null,ex.getMessage());} }   /**      * @param args the command line arguments      */ 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_des_notes.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(Gestion_des_notes.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(Gestion_des_notes.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(Gestion_des_notes.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_des_notes().setVisible(true); } }); }   // Variables declaration - do not modify private javax.swing.JButton jButton2; private javax.swing.JButton jButton5; private javax.swing.JButton jButton6; private javax.swing.JButton jButton7; private javax.swing.JButton jButton8; private javax.swing.JButton jButton9; private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; private javax.swing.JLabel jLabel3; private javax.swing.JLabel jLabel4; private javax.swing.JLabel jLabel5; private javax.swing.JPanel jPanel1; private javax.swing.JScrollPane jScrollPane1; private javax.swing.JTable tble; private java.awt.TextField textField6; private javax.swing.JComboBox<String> txtfil; private java.awt.TextField txtid; private java.awt.TextField txtno; private java.awt.TextField txtnot; private java.awt.TextField txtpr; // End of variables declaration }

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Ça répond à aucune question que j'ai posée. Le code utile c'est surtout le code de la classe Connecter, on n'a pas la stacktrace de l'exception, ni la ligne où est soulevée l'exception, et tu ne dis pas si tu as bien inclus le jar du pilote mysql dans le classpath (si tu ne l'as pas fait, l'erreur que tu as est normale).