Bonjour à tous!

Voilà, j'ai une erreur très étrange sur mon package, je vous montre:

Nom : Capture du 2018-01-13 18-45-05.png
Affichages : 187
Taille : 329,4 Ko

Et voici mon code en entier:

Code : Sélectionner tout - Visualiser dans une fenêtre à part
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package igru.ihm.ihmUtilisateur;
 
import igru.FilDeDiscussion;
import igru.Groupe;
import igru.Message;
import igru.Utilisateur;
import igru.client.Client;
import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.JTree;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
import javax.swing.tree.DefaultMutableTreeNode;
 
 
 
/**
 *
 * @author fuzier
 */
public class InterfaceUtilisateur extends javax.swing.JFrame {
 
 
    private final Utilisateur user;
    private final Client client;
    private FilDeDiscussion filCourant=null;
    private String texteCourant="";
    private boolean surNoeud=false;
 
 
    public InterfaceUtilisateur(Utilisateur user, Client client) {
        initComponents();
        this.setLocationRelativeTo(null);
        this.setResizable(false);
        this.user=user;
        this.client=client;  
        jLabel1.setText(user.getNom());
        jLabel2.setText(user.getPrenom());
 
        creerArbre();
        creerTableau(filCourant);
 
        jTree1.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent me) {
              filCourant=doMouseClicked(me);
            }
        });  
    }
 
 
    private class ModeleTable extends AbstractTableModel{
 
        private final FilDeDiscussion f;
 
        public ModeleTable(FilDeDiscussion f){
            this.f=f;
        }
        @Override
        public int getRowCount() {
            if(f==null)
                return 0;
            else
                return f.getMessages().size();
        }
 
        @Override
        public int getColumnCount() {
            return 5;
        }
 
        @Override
        public Object getValueAt(int rowIndex, int columnIndex) {              
            Message messageCourant=null;
            int i=0;
            for(Message a : f.getMessages()){
                if(i==rowIndex)
                    messageCourant=a;
                i++;
            }
 
            switch(columnIndex){
                case 0: return messageCourant.getAuteur().getPrenom();
                case 1: return messageCourant.getAuteur().getNom();
                case 2: return messageCourant.getAuteur().getIdentifiant();
                case 3: return messageCourant.getDate().toString();
                case 4: return messageCourant.getContenu();
                default: return null;
            }
 
        }
 
        @Override
        public String getColumnName(int i){
            switch (i){
                case 0: return "Prénom";
                case 1: return "Nom";
                case 2: return "Identifiant";
                case 3: return "Date";
                case 4: return "Message";
                default: return null;
            }
        }
 
    }
 
 
    public class CustomTableCellRenderer extends DefaultTableCellRenderer{
 
        @Override
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column){
            Component cell = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
            setFont(new Font(Font.SERIF,Font.BOLD,14));
            Message m=retourneMessage(table.getValueAt(row, 2),table.getValueAt(row, 1),table.getValueAt(row, 3),table.getValueAt(row, 4));
            switch(m.getStatusMessage()){
                case NON_RECU: cell.setBackground(new Color(220,220,220));
                case EN_ATTENTE: cell.setBackground(new Color(250,80,80));
                case RECU: cell.setBackground(new Color(255,210, 135));
                case LU: cell.setBackground(new Color(80,250,80));
            }
 
            return cell;
 
        }
    }
 
    private void creerTableau(FilDeDiscussion fdd){
        JTable table= new JTable( new ModeleTable(fdd));
        TableCellRenderer renderer;
        renderer = new CustomTableCellRenderer();
        try {
            table.setDefaultRenderer( Class.forName( "java.lang.Integer" ), renderer );
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(InterfaceUtilisateur.class.getName()).log(Level.SEVERE, null, ex);
        }
        table.getColumnModel().getColumn(4).setPreferredWidth(500);
        jScrollPane5.setViewportView(table);
 
    }
 
    private FilDeDiscussion doMouseClicked(MouseEvent me) {
        JTree tree;
        tree = (JTree) me.getSource();
	DefaultMutableTreeNode selectedNode = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
        JTable t;
        Groupe groupeCourant=null;
        FilDeDiscussion filCourant1=null;
        if (selectedNode != null){
             if(selectedNode.isLeaf()){
                 String parent=selectedNode.getParent().toString();
                 String enfant=selectedNode.toString();
 
                 for(Groupe g : user.getGroupes()){
                 if(g.getNomGroupe().equals(parent)) 
                    groupeCourant=g;
                 }
 
                 for(FilDeDiscussion f: groupeCourant.getFilsdeDiscussion()){
                     if(f!=null){
                        if(f.getTitre().equals(enfant))
                            filCourant1=f;
                     }
                 }
 
                 String texte=filCourant1.toString();
                 this.texteCourant=texte;
 
                 t=new JTable(new ModeleTable(filCourant1));
                 t.getColumnModel().getColumn(4).setPreferredWidth(500);
                 jScrollPane5.setViewportView(t);
                 this.surNoeud=true;
                 return filCourant1;
 
             }
             else{
                 filCourant1=null;
                 t=new JTable(new ModeleTable(filCourant1));
                 t.getColumnModel().getColumn(4).setPreferredWidth(500);
                 jScrollPane5.setViewportView(t);
                 this.surNoeud=false;
                 return null;
             }
        }
        this.surNoeud=false;
        return null;
    }
 
 
    private void creerArbre(){
 
        DefaultMutableTreeNode root; 
        root = new DefaultMutableTreeNode("Groupes");
 
        if(!user.getGroupes().isEmpty()){
 
            user.getGroupes().stream().forEach((Groupe g) -> {
                DefaultMutableTreeNode branche= new DefaultMutableTreeNode(g.getNomGroupe());
                for(FilDeDiscussion f: g.getFilsdeDiscussion()){
                    branche.add(new DefaultMutableTreeNode(f.getTitre()));
                }
                root.add(branche);
            });
 
 
        }
 
        if(!user.getFilsDeDiscussions().isEmpty()){
            for(FilDeDiscussion f: user.getFilsDeDiscussions()){
                if(!user.getGroupes().contains(f.getGroupe())){
                    DefaultMutableTreeNode branche= new DefaultMutableTreeNode(f.getGroupe().getNomGroupe());
                    branche.add(new DefaultMutableTreeNode(f.getTitre()));
                    root.add(branche);
                }
            }
        }
 
        jTree1 = new JTree(root);
        jScrollPane1.setViewportView(jTree1);
 
 
    }
 
    private Message retourneMessage(String nom,String prenom,String date,String texte){
 
        for(Groupe g : user.getGroupes()){
            for(FilDeDiscussion fdd: g.getFilsdeDiscussion()){
                for(Message m: fdd.getMessages()){
                    if(m.getAuteur().getNom().equals(nom) && m.getAuteur().getPrenom().equals(prenom) && m.getDate().toString().equals(date) && m.getContenu().equals(texte) )
                      return m;
 
                }    
 
            }
 
        }
 
        for(FilDeDiscussion fdd: user.getFilsDeDiscussions()){
                for(Message m: fdd.getMessages()){
                    if(m.getAuteur().getNom().equals(nom) && m.getAuteur().getPrenom().equals(prenom) && m.getDate().toString().equals(date) && m.getContenu().equals(texte) )
                      return m;
                }
 
            }
        return null;
    }
 
 
 
 
 
 
 
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
 
        jScrollPane1 = new javax.swing.JScrollPane();
        jTree1 = new javax.swing.JTree();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jScrollPane3 = new javax.swing.JScrollPane();
        jTextArea2 = new javax.swing.JTextArea();
        jScrollPane2 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jScrollPane5 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
 
        jScrollPane1.setViewportView(jTree1);
 
        jButton1.setText("Envoyer");
        jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton1MouseClicked(evt);
            }
        });
 
        jButton2.setText("Effacer");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });
 
        jButton3.setText("Ajouter discussion");
        jButton3.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton3MouseClicked(evt);
            }
        });
 
        jLabel1.setText("jLabel1");
 
        jLabel2.setText("jLabel2");
 
        jLabel3.setForeground(new java.awt.Color(59, 74, 207));
        jLabel3.setText("Deconnexion");
        jLabel3.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jLabel3MouseClicked(evt);
            }
        });
 
        jTextArea2.setColumns(20);
        jTextArea2.setRows(5);
        jScrollPane3.setViewportView(jTextArea2);
 
        jTextArea1.setEditable(false);
        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jScrollPane2.setViewportView(jTextArea1);
 
        jTable1.setAutoCreateRowSorter(true);
        jTable1.setBorder(javax.swing.BorderFactory.createEmptyBorder(1, 1, 1, 1));
        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {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"
            }
        ));
        jScrollPane5.setViewportView(jTable1);
        jTable1.getAccessibleContext().setAccessibleName("");
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 173, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 173, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jScrollPane3)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                    .addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, 133, Short.MAX_VALUE)
                                    .addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
                            .addComponent(jScrollPane5))
                        .addGap(14, 14, 14))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(0, 374, Short.MAX_VALUE)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addComponent(jLabel3)
                                .addGap(30, 30, 30)
                                .addComponent(jLabel2)
                                .addGap(26, 26, 26)
                                .addComponent(jLabel1))
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 777, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addContainerGap())))))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(6, 6, 6)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(jLabel2)
                    .addComponent(jLabel3))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jScrollPane1)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jButton3))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jScrollPane5, javax.swing.GroupLayout.PREFERRED_SIZE, 449, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addGap(18, 18, 18)
                                .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 62, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 144, javax.swing.GroupLayout.PREFERRED_SIZE))))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 17, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
 
        pack();
    }// </editor-fold>                        
 
    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        jTextArea2.setText("");
    }                                        
 
    private void jLabel3MouseClicked(java.awt.event.MouseEvent evt) {                                     
        Accueil a= new Accueil();
        a.setVisible(true);
        this.dispose();
    }                                    
 
    private void jButton3MouseClicked(java.awt.event.MouseEvent evt) {                                      
           AjouterDiscussion a;
           a = new AjouterDiscussion(user,client);
           a.setVisible(true);
           this.dispose();
    }                                     
 
    private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {                                      
        JTextArea j= new JTextArea();
        if(!surNoeud){
            JOptionPane.showMessageDialog(null, "Veuillez selectionner un fil de discussion", "Erreur", JOptionPane.INFORMATION_MESSAGE);
        }
        else if(jTextArea2.getText().equals(""))
             JOptionPane.showMessageDialog(null, "Veuillez rentrer votre message", "Erreur", JOptionPane.INFORMATION_MESSAGE);
        else{
 
            try {
                client.envoyerMessage(filCourant, jTextArea2.getText());
            } catch (InterruptedException ex) {
                Logger.getLogger(InterfaceUtilisateur.class.getName()).log(Level.SEVERE, null, ex);
            }
            creerTableau(filCourant);
 
 
        }
    }                                     
 
 
 
    // Variables declaration - do not modify                     
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JScrollPane jScrollPane3;
    private javax.swing.JScrollPane jScrollPane5;
    private javax.swing.JTable jTable1;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextArea jTextArea2;
    private javax.swing.JTree jTree1;
    // End of variables declaration                   
}
Je n'ai aucune idée de l'origine de l'erreur, mais j'ai un indice ! Quand je supprime la fonction CustomTableCellRenderer l'erreur n'apparaît plus.
Je vous montre cette fonction:

Nom : Capture du 2018-01-13 18-47-09.png
Affichages : 167
Taille : 347,0 Ko

S'il vous plaît, sauvez moi la vie
Merci d'avance pour votre aide !