XML ne fonctionne pas

bonjour
j arrive pas à créer mon fichier et voir mes données saisies !!!

Code:

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/*  * To change this template, choose Tools | Templates  * and open the template in the editor.  */   /*  * Draw_window.java  *  * Created on 21 févr. 2011, 20:09:41  */ package transformertoxml; // import transformertoxml.Xml_File.*; import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import java.io.Writer; import java.util.ArrayList; import java.util.List; import javax.swing.JComboBox.*; import org.jdom.Document; import org.jdom.Element; import org.jdom.output.Format; import org.jdom.output.XMLOutputter;   /**  *  * @author Nahla  */ public class Draw_window extends javax.swing.JFrame {   /** Creates new form Draw_window */ public Draw_window() { initComponents(); }   /** 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();   jLabel1 = new javax.swing.JLabel(); class_var = new javax.swing.JTextField(); add_att = new javax.swing.JButton(); jLabel3 = new javax.swing.JLabel(); add_class = new javax.swing.JButton(); jLabel4 = new javax.swing.JLabel(); jScrollPane1 = new javax.swing.JScrollPane(); affich1 = new javax.swing.JTextArea(); att_var = new javax.swing.JTextField(); method = new javax.swing.JTextField(); add_meth = new javax.swing.JButton(); acces_class = new javax.swing.JComboBox(); class_container = new javax.swing.JComboBox(); jLabel20 = new javax.swing.JLabel(); jLabel21 = new javax.swing.JLabel(); jLabel22 = new javax.swing.JLabel(); class_value = new javax.swing.JComboBox(); jLabel26 = new javax.swing.JLabel(); acces_att = new javax.swing.JComboBox(); jLabel27 = new javax.swing.JLabel(); acces_meth = new javax.swing.JComboBox(); jLabel28 = new javax.swing.JLabel(); type_meth = new javax.swing.JComboBox(); jLabel29 = new javax.swing.JLabel(); type_att = new javax.swing.JComboBox(); jLabel2 = new javax.swing.JLabel(); jLabel5 = new javax.swing.JLabel(); fromClass = new javax.swing.JComboBox(); toClass = new javax.swing.JComboBox(); jLabel10 = new javax.swing.JLabel(); jLabel6 = new javax.swing.JLabel(); cardFrom = new javax.swing.JComboBox(); jLabel11 = new javax.swing.JLabel(); cardTo = new javax.swing.JComboBox(); jLabel13 = new javax.swing.JLabel(); action = new javax.swing.JTextField(); btnExport = new javax.swing.JButton(); classType = new javax.swing.JComboBox(); jLabel23 = new javax.swing.JLabel(); add_meth1 = new javax.swing.JButton(); typeCard = new javax.swing.JComboBox(); jLabel7 = new javax.swing.JLabel(); jLabel30 = new javax.swing.JLabel(); menuBar = new javax.swing.JMenuBar(); fileMenu = new javax.swing.JMenu(); openMenuItem = new javax.swing.JMenuItem(); saveMenuItem = new javax.swing.JMenuItem(); saveAsMenuItem = new javax.swing.JMenuItem(); exitMenuItem = new javax.swing.JMenuItem(); editMenu = new javax.swing.JMenu(); cutMenuItem = new javax.swing.JMenuItem(); copyMenuItem = new javax.swing.JMenuItem(); pasteMenuItem = new javax.swing.JMenuItem(); deleteMenuItem = new javax.swing.JMenuItem(); helpMenu = new javax.swing.JMenu(); contentsMenuItem = new javax.swing.JMenuItem(); aboutMenuItem = new javax.swing.JMenuItem();   setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); addWindowListener(new java.awt.event.WindowAdapter() { public void windowOpened(java.awt.event.WindowEvent evt) { formWindowOpened(evt); } });   jLabel1.setText("1.Class name");   class_var.setText(" "); class_var.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { class_varActionPerformed(evt); } });   add_att.setText("Add"); add_att.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { add_attActionPerformed(evt); } });   jLabel3.setText("3. Attribut");   add_class.setText("Add"); add_class.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { add_classActionPerformed(evt); } });   jLabel4.setText("4. Method");   affich1.setColumns(20); affich1.setRows(5); affich1.setMargin(new java.awt.Insets(5, 5, 5, 5)); jScrollPane1.setViewportView(affich1);   att_var.setText(" "); att_var.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { att_varActionPerformed(evt); } });   method.setText(" "); method.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { methodActionPerformed(evt); } });   add_meth.setText("Add"); add_meth.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { add_methActionPerformed(evt); } });   acces_class.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "public", "private", "protected" }));   org.jdesktop.beansbinding.Binding binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, acces_class, org.jdesktop.beansbinding.ObjectProperty.create(), acces_class, org.jdesktop.beansbinding.BeanProperty.create("elements")); bindingGroup.addBinding(binding); binding = org.jdesktop.beansbinding.Bindings.createAutoBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, acces_class, org.jdesktop.beansbinding.ObjectProperty.create(), acces_class, org.jdesktop.beansbinding.BeanProperty.create("selectedItem")); bindingGroup.addBinding(binding);   acces_class.addItemListener(new java.awt.event.ItemListener() { public void itemStateChanged(java.awt.event.ItemEvent evt) { acces_classItemStateChanged(evt); } }); acces_class.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { acces_classActionPerformed(evt); } });   class_container.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "extends", "implements", " " })); class_container.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { class_containerActionPerformed(evt); } });   jLabel20.setForeground(new java.awt.Color(102, 0, 102)); jLabel20.setText("Access control class");   jLabel21.setForeground(new java.awt.Color(102, 0, 102)); jLabel21.setText("Container");   jLabel22.setForeground(new java.awt.Color(102, 0, 102)); jLabel22.setText("Container value");   class_value.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));   jLabel26.setForeground(new java.awt.Color(102, 0, 102)); jLabel26.setText("Access control attribut");   acces_att.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "public", "private", "protected" })); acces_att.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { acces_attActionPerformed(evt); } });   jLabel27.setForeground(new java.awt.Color(102, 0, 102)); jLabel27.setText("Access control method");   acces_meth.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "public", "private", "protected" })); acces_meth.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { acces_methActionPerformed(evt); } });   jLabel28.setForeground(new java.awt.Color(102, 0, 102)); jLabel28.setText("Type method");   type_meth.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "void", "boolean", "byte", "char", "double", "float", "int", "long", "String", "short" })); type_meth.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { type_methActionPerformed(evt); } });   jLabel29.setForeground(new java.awt.Color(102, 0, 102)); jLabel29.setText("Type attribut");   type_att.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "boolean", "byte", "char", "double", "float", "int", "long", "String", "short" })); type_att.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { type_attActionPerformed(evt); } });   jLabel2.setText("* les relations & les associations");   jLabel5.setText("From");   jLabel10.setText("To");   jLabel6.setText("Cardinality");   cardFrom.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "0", "1", "n" }));   jLabel11.setText("To");   cardTo.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "0", "1", "n" }));   jLabel13.setText("Action");   btnExport.setText("Exporter"); btnExport.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnExportActionPerformed(evt); } });   classType.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Class", "Interface" }));   jLabel23.setForeground(new java.awt.Color(102, 0, 102)); jLabel23.setText("Type");   add_meth1.setText("Add"); add_meth1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { add_meth1ActionPerformed(evt); } });   typeCard.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Navigation", "Association", "Composition", "Dependency", "Agregation", "Generalisation" }));   jLabel7.setText("Type");   jLabel30.setForeground(new java.awt.Color(102, 0, 102)); jLabel30.setText("Access control method");   fileMenu.setText("File");   openMenuItem.setText("Open"); fileMenu.add(openMenuItem);   saveMenuItem.setText("Save"); fileMenu.add(saveMenuItem);   saveAsMenuItem.setText("Save As ..."); fileMenu.add(saveAsMenuItem);   exitMenuItem.setText("Exit"); exitMenuItem.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { exitMenuItemActionPerformed(evt); } }); fileMenu.add(exitMenuItem);   menuBar.add(fileMenu);   editMenu.setText("Edit");   cutMenuItem.setText("Cut"); editMenu.add(cutMenuItem);   copyMenuItem.setText("Copy"); editMenu.add(copyMenuItem);   pasteMenuItem.setText("Paste"); editMenu.add(pasteMenuItem);   deleteMenuItem.setText("Delete"); editMenu.add(deleteMenuItem);   menuBar.add(editMenu);   helpMenu.setText("Help");   contentsMenuItem.setText("Contents"); helpMenu.add(contentsMenuItem);   aboutMenuItem.setText("About"); helpMenu.add(aboutMenuItem);   menuBar.add(helpMenu);   setJMenuBar(menuBar);   javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() .addContainerGap() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(btnExport) .addGroup(layout.createSequentialGroup() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() 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.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel26) .addComponent(acces_att, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(type_att, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel29))) .addGroup(layout.createSequentialGroup() .addGap(39, 39, 39) .addComponent(add_att))) .addGap(7, 7, 7) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGap(12, 12, 12) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel4) .addComponent(method, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))) .addGroup(layout.createSequentialGroup() .addGap(11, 11, 11) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(acces_meth, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel30)))) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel27) .addComponent(jLabel28) .addComponent(type_meth, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))) .addGroup(layout.createSequentialGroup() .addGap(22, 22, 22) .addComponent(add_meth)))) .addGroup(layout.createSequentialGroup() .addGap(28, 28, 28) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel3) .addComponent(att_var, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))) .addGap(8, 8, 8) .addComponent(jLabel2) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(typeCard, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel7)) .addGap(8, 8, 8) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(fromClass, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(toClass, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel10) .addComponent(jLabel5)) .addGap(18, 18, 18) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel6) .addComponent(cardFrom, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel11) .addComponent(cardTo, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(add_meth1)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel13) .addComponent(action, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))) .addContainerGap()) );   acces_class.getAccessibleContext().setAccessibleParent(acces_class);   bindingGroup.bind();   pack(); }// </editor-fold>   private void exitMenuItemActionPerformed(java.awt.event.ActionEvent evt) { System.exit(0); }   private void class_varActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: String enter = class_var.getText(); // e   }   private void add_classActionPerformed(java.awt.event.ActionEvent evt) { /////////////////////// Classe classe = new Classe(); classe.attributs = new ArrayList<Attribut>(); classe.methodes = new ArrayList<Methode>(); classe.nom = class_var.getText(); classe.accessControl = (String) acces_class.getSelectedItem(); classe.container = (String) class_container.getSelectedItem(); classe.containerValue = (String) class_value.getSelectedItem(); indexClasses++; classe.id = String.valueOf(indexClasses + 1); classes.add(classe);   //////////////////// // TODO add your handling code here: String sortie1 = null; sortie1 = class_var.getText();   // liste class acces String class_slected = ""; class_slected = class_slected + acces_class.getSelectedItem().toString(); // liste container String container_slected = ""; container_slected = container_slected + class_container.getSelectedItem().toString(); String vide = (String) class_container.getSelectedItem(); //affichage if (vide == null) { container_slected = "aucun"; affich1.append("Class name : " + sortie1 + " \n Acces control class :" + class_slected + "\nContainer :" + container_slected); } else { affich1.append("class name : " + sortie1 + " \n acces control class :" + class_slected + "\ncontainer :" + container_slected); } // affich1. affich1.setEditable(false);   recharger(); } /**      *      */ public void recharger() { fromClass.removeAllItems(); toClass.removeAllItems(); for (int i = 0; i < classes.size(); i++) { fromClass.addItem(classes.get(i).nom); toClass.addItem(classes.get(i).nom); } } private void att_varActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: String attribut = att_var.getText(); // recuperer valeur de attribut saisi     }   private void add_attActionPerformed(java.awt.event.ActionEvent evt) {   ////////////////////// Attribut attribut = new Attribut(); attribut.accesControl = (String) acces_att.getSelectedItem(); attribut.typeAttribut = (String) type_att.getSelectedItem(); classes.get(indexClasses).attributs.add(attribut); /////////////////////   // TODO add your handling code here: // nom d class saisi String sortie1 = null; sortie1 = att_var.getText(); // liste attribut acces String att_slected = ""; att_slected = att_slected + acces_att.getSelectedItem().toString(); // type attribut String type_att_slected = ""; type_att_slected = type_att_slected + type_att.getSelectedItem().toString(); /*   //affichage   affich1.append("Attribut : "+ sortie1+ " \n acces control class :"+class_slected+"\ncontainer :"+container_slected);     affich1.setEditable(false);   * */ affich1.append("\nAttribut: " + sortie1 + "\nAcces control attribut: " + att_slected + "\nType attribut: " + type_att_slected); affich1.setEditable(false); }   private void methodActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: String enter3 = method.getText(); }   private void add_methActionPerformed(java.awt.event.ActionEvent evt) {   ////////////////////// Methode methode = new Methode(); methode.accesControl = (String) acces_meth.getSelectedItem(); methode.typeMethode = (String) type_meth.getSelectedItem(); classes.get(indexClasses).methodes.add(methode); /////////////////////     // TODO add your handling code here: // nom methode saisi String sortie1 = null; sortie1 = method.getText(); // acces method String method_slected = ""; method_slected = method_slected + acces_meth.getSelectedItem().toString(); // recuperer type methode ( valeur de retour) String type_meth_slected = ""; type_meth_slected = type_meth_slected + type_meth.getSelectedItem().toString(); // affich1.append("\nMethod name:" + sortie1 + "\nAcces control method: " + method_slected + "\nType method: " + type_meth_slected); }   private void acces_attActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: String att_slected = ""; // att_slected = }   private void acces_classActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: // access_class.addItem("");   // acces_class.addItem(possibleValues); String class_slected = ""; class_slected = class_slected + acces_class.getSelectedItem().toString();     } // recupere cet element // String str = (String)combo.getSelectedItem(); // recuperer tout les Jcombobox   // public String getAccess_class(){return (String) acces_class ;} private void acces_classItemStateChanged(java.awt.event.ItemEvent evt) { // TODO add your handling code here: // String str_class = (String) access_class.getSlectedItem(); }   private void class_containerActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:   String container_slected = ""; container_slected = container_slected + class_container.getSelectedItem().toString(); }   private void type_attActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: // recuperer valeur selctionée String type_att_slected = ""; type_att_slected = type_att_slected + type_att.getSelectedItem().toString(); }   private void acces_methActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: String method_slected = ""; method_slected = method_slected + acces_meth.getSelectedItem().toString(); }   private void type_methActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: // recuperer type methode ( valeur de retour) String type_meth_slected = ""; type_meth_slected = type_meth_slected + type_meth.getSelectedItem().toString(); }   private void btnExportActionPerformed(java.awt.event.ActionEvent evt) {   try { //l'element root du document xml Element root = new Element("Diagram"); root.setAttribute("name", "Diagramme_Test"); Document doc = new Document(root); Element nodeClasses = new Element("classes"); for (int i = 0; i < classes.size(); i++) { //un noeud classe Element nodeClass = new Element("classe"); nodeClass.setAttribute("id", classes.get(i).id); nodeClass.setAttribute("name", classes.get(i).nom);   nodeClass.setAttribute("access", classes.get(i).accessControl); nodeClass.setAttribute("container", classes.get(i).container); nodeClass.setAttribute("containerValue", classes.get(i).containerValue); // Ajouter les attributs if (classes.get(i).attributs.size() > 0) { Element nodeAttributs = new Element("attributs"); for (int j = 0; j < classes.get(i).attributs.size(); j++) { //un noeud classe Element nodeAttribut = new Element("attribut"); nodeAttribut.setAttribute("access", classes.get(i).attributs.get(j).accesControl); nodeAttribut.setAttribute("type", classes.get(i).attributs.get(j).typeAttribut); nodeAttributs.addContent(nodeAttribut); } nodeClass.addContent(nodeAttributs); } // Ajouter les méthodes if (classes.get(i).methodes.size() > 0) { Element nodeMethodes = new Element("methodes"); for (int j = 0; j < classes.get(i).methodes.size(); j++) { //un noeud classe Element nodeMethode = new Element("methode"); nodeMethode.setAttribute("accessControl", classes.get(i).methodes.get(j).accesControl); nodeMethode.setAttribute("type", classes.get(i).methodes.get(j).typeMethode); nodeMethodes.addContent(nodeMethode); } nodeClass.addContent(nodeMethodes); } nodeClasses.addContent(nodeClass); root.addContent(nodeClasses); } if (cardinalites.size() > 0) { Element nodeCardinalites = new Element("cardinalites"); for (int i = 0; i < cardinalites.size(); i++) { Element nodeCardinalite = new Element("relation");   nodeCardinalite.setAttribute("type", cardinalites.get(i).type); nodeCardinalite.setAttribute("start", cardinalites.get(i).cardinalityFrom); nodeCardinalite.setAttribute("end", cardinalites.get(i).cardinalityTo); nodeCardinalite.setAttribute("action", cardinalites.get(i).action); Element nodeSource = new Element("source"); nodeSource.setAttribute("reference", cardinalites.get(i).fromClass); Element nodeTarget = new Element("target"); nodeTarget.setAttribute("reference", cardinalites.get(i).fromClass);   nodeCardinalite.addContent(nodeSource); nodeCardinalite.addContent(nodeTarget); nodeCardinalites.addContent(nodeCardinalite);   } root.addContent(nodeCardinalites); } enregistre("Diagramme_Test.xml", doc);   } catch (Throwable e) { e.printStackTrace(); }   }   /**      *      * @param fichier      * @param document      */ void enregistre(String fichier, Document document) { try { //On utilise ici un affichage classique avec getPrettyFormat() XMLOutputter sortie = new XMLOutputter(Format.getPrettyFormat()); //Remarquez qu'il suffit simplement de créer une instance de FileOutputStream //avec en argument le nom du fichier pour effectuer la sérialisation. sortie.output(document, new FileOutputStream(fichier)); } catch (java.io.IOException e) { } }   private void formWindowOpened(java.awt.event.WindowEvent evt) { classes = new ArrayList<Classe>(); cardinalites = new ArrayList<Cardinalite>(); }   private void add_meth1ActionPerformed(java.awt.event.ActionEvent evt) { Cardinalite cardinalite = new Cardinalite(); cardinalite.fromClass = (String) fromClass.getSelectedItem(); cardinalite.toClass = (String) toClass.getSelectedItem(); cardinalite.cardinalityFrom = (String) cardFrom.getSelectedItem(); cardinalite.cardinalityTo = (String) cardTo.getSelectedItem(); cardinalite.type = (String) typeCard.getSelectedItem(); cardinalite.action = action.getText(); cardinalites.add(cardinalite); }   /**      * @param args the command line arguments      */ public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() {   public void run() { new Draw_window().setVisible(true); } }); } List <Classe> classes; List <Cardinalite> cardinalites; int indexClasses = -1; int indexCardinalites = -1; // Variables declaration - do not modify private javax.swing.JMenuItem aboutMenuItem; private javax.swing.JComboBox acces_att; private javax.swing.JComboBox acces_class; private javax.swing.JComboBox acces_meth; private javax.swing.JTextField action; private javax.swing.JButton add_att; private javax.swing.JButton add_class; private javax.swing.JButton add_meth; private javax.swing.JButton add_meth1; private javax.swing.JTextArea affich1; private javax.swing.JTextField att_var; private javax.swing.JButton btnExport; private javax.swing.JComboBox cardFrom; private javax.swing.JComboBox cardTo; private javax.swing.JComboBox classType; private javax.swing.JComboBox class_container; private javax.swing.JComboBox class_value; private javax.swing.JTextField class_var; private javax.swing.JMenuItem contentsMenuItem; private javax.swing.JMenuItem copyMenuItem; private javax.swing.JMenuItem cutMenuItem; private javax.swing.JMenuItem deleteMenuItem; private javax.swing.JMenu editMenu; private javax.swing.JMenuItem exitMenuItem; private javax.swing.JMenu fileMenu; private javax.swing.JComboBox fromClass; private javax.swing.JMenu helpMenu; private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel10; private javax.swing.JLabel jLabel11; private javax.swing.JLabel jLabel13; private javax.swing.JLabel jLabel2; private javax.swing.JLabel jLabel20; private javax.swing.JLabel jLabel21; private javax.swing.JLabel jLabel22; private javax.swing.JLabel jLabel23; private javax.swing.JLabel jLabel26; private javax.swing.JLabel jLabel27; private javax.swing.JLabel jLabel28; private javax.swing.JLabel jLabel29; private javax.swing.JLabel jLabel3; private javax.swing.JLabel jLabel30; private javax.swing.JLabel jLabel4; private javax.swing.JLabel jLabel5; private javax.swing.JLabel jLabel6; private javax.swing.JLabel jLabel7; private javax.swing.JScrollPane jScrollPane1; private javax.swing.JMenuBar menuBar; private javax.swing.JTextField method; private javax.swing.JMenuItem openMenuItem; private javax.swing.JMenuItem pasteMenuItem; private javax.swing.JMenuItem saveAsMenuItem; private javax.swing.JMenuItem saveMenuItem; private javax.swing.JComboBox toClass; private javax.swing.JComboBox typeCard; private javax.swing.JComboBox type_att; private javax.swing.JComboBox type_meth; private org.jdesktop.beansbinding.BindingGroup bindingGroup; // End of variables declaration }

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et l'erreur c' :

Code:

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org.jdom.IllegalAddException: The Content already has an existing parent "Diagram" at org.jdom.ContentList.add(ContentList.java:209) at org.jdom.ContentList.add(ContentList.java:131) at java.util.AbstractList.add(AbstractList.java:91) at org.jdom.Element.addContent(Element.java:811) at transformertoxml.Draw_window.btnExportActionPerformed(Draw_window.java:770) at transformertoxml.Draw_window.access$1400(Draw_window.java:29) at transformertoxml.Draw_window$15.actionPerformed(Draw_window.java:259) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$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:6216) at javax.swing.JComponent.processMouseEvent(JComponent.java:3265) at java.awt.Component.processEvent(Component.java:5981) at java.awt.Container.processEvent(Container.java:2041) at java.awt.Component.dispatchEventImpl(Component.java:4583) at java.awt.Container.dispatchEventImpl(Container.java:2099) at java.awt.Component.dispatchEvent(Component.java:4413) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4556) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4220) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4150) at java.awt.Container.dispatchEventImpl(Container.java:2085) at java.awt.Window.dispatchEventImpl(Window.java:2475) at java.awt.Component.dispatchEvent(Component.java:4413) at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

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avant d'ajouter un noeud à un nouveau parent, il faut le détacher du parent précédent, car un noeud ne peut avoir qu'un seul parent en xml.