Le fonctionnement de JProgressBar

**benmia** · 17/03/2015, 11h43

Bonjour,

J'ai le programme suivant :

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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package migration;
 
import java.io.File;
import java.io.FileWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;
import javax.swing.DefaultListModel;
import javax.swing.SwingUtilities;
import javax.swing.text.html.parser.DTDConstants;
import org.json.simple.JSONObject;
 
public class Generer_JSON extends javax.swing.JFrame {
 
    /**
     * Creates new form Generer_JSON
     */
    public Generer_JSON() {
        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() {
 
        jScrollPane1 = new javax.swing.JScrollPane();
        jList1 = new javax.swing.JList();
        jScrollPane2 = new javax.swing.JScrollPane();
        jList2 = new javax.swing.JList();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jScrollPane3 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jProgressBar1 = new javax.swing.JProgressBar();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
 
        jList1.setModel(new javax.swing.AbstractListModel() {
            String[] strings = { "User", "Message", "Commune", "Adress", "Statut", "Commenter_statut", "Aimer_Statut", "Image", "Album", "Composer", "Aimer_Image", "Commenter_Image", "Groupe", "Adherer", "Message", "Evenement", "Inviter", "Participer", "Etre_Amie" };
            public int getSize() { return strings.length; }
            public Object getElementAt(int i) { return strings[i]; }
        });
        jScrollPane1.setViewportView(jList1);
 
        jScrollPane2.setViewportView(jList2);
 
        jButton1.setText("Selectionner");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });
 
        jButton2.setText("Generer_les_ficher_JSON");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });
 
        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jScrollPane3.setViewportView(jTextArea1);
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(24, 24, 24)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 140, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(101, 101, 101)
                                .addComponent(jButton1)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 140, Short.MAX_VALUE)
                                .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addGap(22, 22, 22))
                            .addGroup(layout.createSequentialGroup()
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addGroup(layout.createSequentialGroup()
                                        .addGap(81, 81, 81)
                                        .addComponent(jButton2))
                                    .addGroup(layout.createSequentialGroup()
                                        .addGap(8, 8, 8)
                                        .addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, 356, javax.swing.GroupLayout.PREFERRED_SIZE)))
                                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jScrollPane3)
                        .addContainerGap())))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addContainerGap()
                                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 209, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(layout.createSequentialGroup()
                                .addGap(12, 12, 12)
                                .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 196, javax.swing.GroupLayout.PREFERRED_SIZE)))
                        .addGap(18, 18, 18))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(64, 64, 64)
                        .addComponent(jButton1)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 73, Short.MAX_VALUE)
                        .addComponent(jButton2)
                        .addGap(55, 55, 55)))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 54, Short.MAX_VALUE)
                .addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(74, 74, 74)
                .addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 202, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );
 
        pack();
    }// </editor-fold>                        
 
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
             jList1.getSelectionModel().addListSelectionListener(null);
    DefaultListModel<String> model=new DefaultListModel<>(); 
       for(Object selected :jList1.getSelectedValuesList()) {
          model.addElement((String) selected);
         // System.out.println(    model.contains("users"));
 
       }
       jList2.setModel(model); 
    }                                        
 
    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
     try{
 
        Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/reseau_social","root","root");//?user=root&password=root\"");
        System.out.println("connexion à la base de données réussie ");
        Statement stmt = connect.createStatement(); 
 
     Task task = new Task();
            task.start();{
         DefaultListModel<String> model=new DefaultListModel<>();
         for(Object selected :jList1.getSelectedValuesList()) {
         model.addElement((String) selected);
         }
 
if(model.contains("User")){
    ResultSet rs1 = stmt.executeQuery( "select * from user  " ) ;
    ResultSetMetaData resultMeta = rs1.getMetaData();
    JSONObject obj = new JSONObject();
    File file1 =new File ("C:\\Users\\help\\Desktop\\users.json") ;
    file1.createNewFile();
    FileWriter writer =new FileWriter(file1);
 
while(rs1.next()){ 
    obj.put("id_user", rs1.getObject(1).toString()) ;
    obj.put("nom", rs1.getObject(2).toString());
    obj.put("prenom", rs1.getObject(3).toString()) ;
    obj.put("email", rs1.getObject(4).toString());
    obj.put("mot_de_pass", rs1.getObject(5).toString()) ;
    obj.put("id_commune", rs1.getObject(6).toString());
 
    Object jsoncontent = obj;
    System.out.println("le"+jsoncontent);
    jTextArea1.append(jsoncontent.toString()+"\n");
    writer.write(jsoncontent.toString()+"\n");
    writer.flush();
    }  rs1.close();
    }
 
 
/**************************************commune*****************************************/    
 
 if(model.contains("Commune")){
    JSONObject obj2 = new JSONObject();
    ResultSet rs2 = stmt.executeQuery( "select * from commune " ) ;
    ResultSetMetaData      resultMeta3 = rs2.getMetaData();
 
    File file2 =new File ("C:\\Users\\help\\Desktop\\commune.json") ;
    file2.createNewFile();
    FileWriter writer2 =new FileWriter(file2);
    while(rs2.next())
    { 
        obj2.put("id_commune", rs2.getObject(1).toString()) ;   // for(int i = 1; i <=  resultMeta.getColumnCount(); i++){
        obj2.put("nom_commune", rs2.getObject(2).toString());
         obj2.put("id_adress", rs2.getObject(3).toString());
        Object jsoncontent2 = obj2;
        System.out.println("le"+jsoncontent2);
 
        writer2.write(jsoncontent2.toString()+"\n");
        writer2.flush();
        jTextArea1.append(jsoncontent2.toString()+"\n");
         }  rs2.close();  
 }
 
 
 //////////////////////******************adress****************************///////////
 
 
  if(model.contains("Adress")){
 JSONObject obj1 = new JSONObject();
    ResultSet rs2 = stmt.executeQuery( "select * from adress " ) ;
    ResultSetMetaData      resultMeta2 = rs2.getMetaData();
    File file1 =new File ("C:\\Users\\help\\Desktop\\adress.json") ;
    file1.createNewFile();
    FileWriter writer1 =new FileWriter(file1);
    while(rs2.next())
    { 
        obj1.put("id_adress", rs2.getObject(1).toString()) ;   // for(int i = 1; i <=  resultMeta.getColumnCount(); i++){
        obj1.put("nom_adress", rs2.getObject(2).toString());
        Object jsoncontent1 = obj1;
        System.out.println("le"+jsoncontent1);
        jTextArea1.append(jsoncontent1.toString()+"\n");
        writer1.write(jsoncontent1.toString()+"\n");
        writer1.flush();
        }  rs2.close();                                       // writer.close();
  }
 
 
 //////////////////////***************etre_amie*************************************************************/
 
   if(model.contains("Etre_Amie")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from etre_amie " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\etre_amie.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_user", rs4.getObject(1).toString()) ;   // for(int i = 1; i <=  resultMeta.getColumnCount(); i++){
        obj4.put("id_user_1", rs4.getObject(2).toString());
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString());
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   }
 
 
 
  /***************************statut************************************************/ 
  if(model.contains("Statut")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from statu " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\statut.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_statu", rs4.getObject(1).toString()) ;   // for(int i = 1; i <=  resultMeta.getColumnCount(); i++){
        obj4.put("id_user", rs4.getObject(2).toString());
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString());
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   }  
 
 /*****************************************commenter le statut***************************************************/  
  if(model.contains("Commenter_statut")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from commenter_statu " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\cmnt_statu.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_statu", rs4.getObject(1).toString()) ;   
        obj4.put("commentaire", rs4.getObject(2).toString()) ; 
        obj4.put("id_user", rs4.getObject(3).toString());
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   }  
 
 
 /******************************     Aimer un statu         ***********************************///
   if(model.contains("Aimer_Statut")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from aimer_statu " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\aime_statu.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_statu", rs4.getObject(1).toString()) ;   
 
        obj4.put("id_user", rs4.getObject(2).toString());
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   }     
 
 
/*******************************         image                *************************************************************/     
    if(model.contains("Image")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from image " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\image.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_image", rs4.getObject(1).toString()) ;   
        obj4.put("type_image", rs4.getObject(2).toString()) ; 
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   }    
 
 /****************************************Album *************************************************************************/    
 
  if(model.contains("Album")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from album " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\album.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_album", rs4.getObject(1).toString()) ;   
        obj4.put("id_user", rs4.getObject(2).toString());
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   }      
 
/*************************composer*********************************************************/  
 if(model.contains("Composer")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from composer " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\composer.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_album", rs4.getObject(1).toString()) ;   
        obj4.put("id_user", rs4.getObject(2).toString());
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   }    
 
 
 
 /*************************************************aimer image**********************************************************/
  if(model.contains("Aimer_Image")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from aimer_image " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\aime_image.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_user", rs4.getObject(1).toString()) ;   
 
        obj4.put("id_image", rs4.getObject(2).toString());
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   }  
 /**********************************COMMENTER IMAGE*****************************************************************/
 if(model.contains("Commenter_Image")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from commenter_image " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\aime_image.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_user", rs4.getObject(1).toString()) ;   
 
        obj4.put("id_image", rs4.getObject(2).toString());
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   }  
 
 /************************************ groupe***********************************************************************/
 if(model.contains("Groupe")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from groupe " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\groupe.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
         obj4.put("id_groupe", rs4.getObject(1).toString()) ; 
        obj4.put("id_user", rs4.getObject(2).toString()) ;   
 
        obj4.put("id_image", rs4.getObject(3).toString());
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   }  
 
 /**************************************adherer *************************************************/
 if(model.contains("Adherer")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from adherer " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\adherer.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
         obj4.put("id_user", rs4.getObject(1).toString()) ; 
        obj4.put("id_groupe", rs4.getObject(2).toString()) ;   
 
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   } 
 
/////////*****************************************************message***************************************/
 if(model.contains("Message")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from message " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\message.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
         obj4.put("id_message", rs4.getObject(1).toString()) ;
         obj4.put("contenu", rs4.getObject(2).toString());
        obj4.put("id_user", rs4.getObject(3).toString()) ;   
        obj4.put("id_user_1", rs4.getObject(4).toString()) ;  
 
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   } 
 
 
 /****************************evenement***********************************/
  if(model.contains("Evenement")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from evenement " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\evenement.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_evenement", rs4.getObject(1));
        obj4.put("id_commune", rs4.getObject(2));
        obj4.put("id_user", rs4.getObject(3).toString()) ;   
 
 
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   } 
 
 /*****************************inviter******************************************/
  if(model.contains("Inviter")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from inviter " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\inviter.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_evenement", rs4.getObject(1));
 
        obj4.put("id_user", rs4.getObject(2).toString()) ;   
 
 
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   } 
 /*************************************** participer*********************************/
  if(model.contains("Participer")){
   JSONObject obj4 = new JSONObject();
 
    ResultSet rs4 = stmt.executeQuery( "select * from participer " );
    ResultSetMetaData      resultMeta4 = rs4.getMetaData();
      // System.out.println("+++++++++"+rs4.getMetaData());
    File file4 =new File ("C:\\Users\\help\\Desktop\\participer.json") ;
    file4.createNewFile();
    FileWriter writer4 =new FileWriter(file4);
 while(rs4.next())
    { 
        obj4.put("id_evenement", rs4.getObject(1));
 
        obj4.put("id_user", rs4.getObject(2).toString()) ;   
 
 
        Object jsoncontent4 = obj4;
        System.out.println("le"+jsoncontent4);
        jTextArea1.append(jsoncontent4.toString()+"\n");
        writer4.write(jsoncontent4.toString()+"\n");
        writer4.flush();
        }  rs4.close();             
   }
     }
 
 
          }catch (Exception e){}  
 
    }                                        
 private class Task extends Thread {    
      public Task(){
      }
 
      public void run(){
               jProgressBar1.setVisible(true); 
 
 
               for(int i =0; i<= 100; i+=1){
            final int progress = i;
            SwingUtilities.invokeLater(new Runnable() {
               public void run() {
                  jProgressBar1.setValue(progress);
                 // outputTextArea.setText(outputTextArea.getText() 
                 // + String.format("Completed %d%% of task.\n", progress));
               }
            });
            try {
               Thread.sleep(900);
            } catch (InterruptedException e) {}
         }
      }}
    private void jProgressBar1PropertyChange(java.beans.PropertyChangeEvent evt) {                                             
 
     jProgressBar1.setVisible(false); 
    }  
    /**
     * @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 http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        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(Generer_JSON.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Generer_JSON.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Generer_JSON.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Generer_JSON.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 Generer_JSON().setVisible(true);
            }
        });
    }
 
    // Variables declaration - do not modify                     
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JList jList1;
    private javax.swing.JList jList2;
    private javax.swing.JProgressBar jProgressBar1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JScrollPane jScrollPane3;
    private javax.swing.JTextArea jTextArea1;
    // End of variables declaration
}

et lors de la création des fichiers, le temps d'exécution est un peu long. J'ai donc décidé de faire un JProgressBar mais il ne fonctionne pas correctement.

Quelqu'un saurait-il me guider un peu ?

Merci d'avance pour votre aide.

**joel.drigo** · 17/03/2015, 12h34

Salut,

Tu pourrais préciser "pas correctement" ?

Là, à priori, la progressbar fonctionne exactement comme tu lui demande de fonctionner : elle progresse de 0 à 100, à raison de 1 toutes les 900 ms. Elle est donc complètement décorélée de ton process, qui peut prendre moins de 90 secondes, ou plus peut-être, en tout cas rarement 90 secondes.
Ensuite le process que tu fais, le process long comme tu dis, est fait sur événement d'UI (actionPerformed) : il s'exécute donc dans le thread de SWING, le même qui est utilisé pour mettre à jour l'affichage de tout ce qui graphique, donc y compris la progressbar. Donc la valeur de progression progresse bien de 0 à 100 en 90 secondes, mais l'affichage correspondant de la progressbar ne se fait que quand le thread graphique le permet, donc à la fin du process long, quand il rend la main sur le thread (SWING) dans lequel il s'exécute.

Ce n'est pas du tout comme ça qu'il faut gérer ça :

le process long doit être fait dans un thread différent du thread SWING
ce même thread doit faire progresser la valeur de progression (soit selon la progression des étapes que fait ton process long, soit selon une estimation du temps, soit en mode indéterminé)
on demande au thread graphique de se rafraichir pour qu'on voit la progression dans la progressbar, à chaque fois qu'on modifie la valeur de progression
à la fin du process long, on met éventuellement à jour l'affichage correspondant

Pour t'aider à faire ce genre de chose, il y a une classe Java : SwingWorker.

**benmia** · 17/03/2015, 12h57

Merci de votre reponse , donc je doit creer maintenant un autre thread qui fait le mon traitement qui est long

**joel.drigo** · 17/03/2015, 14h30

Envoyé par benmia

Merci de votre reponse , donc je doit creer maintenant un autre thread qui fait le mon traitement qui est long

Oui, ou utilise un SwingWorker qui s'occupera de ce thread.

D'autre part, je ne comprends pas pourquoi tu ne traites pas tous tes objets dans une boucle : ça serait bien plus simple, éviterait de la duplication de code, et ça te permettrait de gérer plus facilement la progression réelle. A quoi sert model dans jButton2ActionPerformed ? Tu te compliques bien la vie.

Comme ça par exemple

Code :

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public class Task extends SwingWorker<Object, JSONObject> {
 
	private final static String PATH = "C:/Users/help/Desktop/";
 
	private final String[] values;
 
	private final JTextArea jtextArea;
 
	public Task(String[] values, JTextArea jtextArea) {
		this.values=values;
		this.jtextArea=jtextArea;
	}
 
	@Override
	protected Object doInBackground() throws Exception {
 
		int progression = 0;
 
		try( Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/reseau_social","root","root") ) {
			Statement stmt = connect.createStatement(); 
 
			for(String value : values) {
 
				createJSon(value, getTableName(value.toLowerCase()), getFileName(value.toLowerCase()), stmt);
				setProgress(++progression); // par exemple, pour une progression par objet
 
			}
 
		}
 
		return null;
	}
 
 
 
	private String getTableName(String value) {
		return value;
		/* ou si tu as besoin d'avoir des noms différents
 
		String tableName;
		switch(value) {
		case "user":
			tableName = "user";
			break;
		case "adress":
			tableName = "adress";
			break;
			// JE TE LAISSE COMPLETER
		default:
			throw new IllegalStateException();
		}
		return tableName;*/
	}
 
    private String getFileName(String value) {
    	//return value + ".json"
    	String filename;
		switch(value) {
		case "user":
			filename = "users";
			break;
		case "adress":
			filename = "adress";
			break;
			// JE TE LAISSE COMPLETER
		default:
			throw new IllegalStateException();
		}
		return filename + ".json";
	}
 
	private void createJSon(String value, String tableName, String fileName, Statement stmt) throws SQLException, IOException {
    	try(ResultSet rs1 = stmt.executeQuery( "select * from " + tableName )) { 
	        ResultSetMetaData resultMeta = rs1.getMetaData();
 
	        try( BufferedWriter writer = Files.newBufferedWriter(Paths.get(PATH, fileName)) ) {
 
	        	 while(rs1.next()){ 
	        		 JSONObject json = new JSONObject(); 
	        		 for(int i=1; i<=resultMeta.getColumnCount(); i++) {
	        			 String columnName = resultMeta.getColumnName(i);
	        			 json.put(columnName, rs1.getObject(i).toString()) ;
	        		 }
	        		 writer.write(json.toString());
	        		 writer.write(System.lineSeparator());
	        		 publish(json);
	        	 }
 
	        }
 
    	}
 
    }
 
    protected void process(java.util.List<JSONObject> chunks) {
 
    	for(JSONObject json : chunks) {
    		jtextArea.append(json.toString()+"\n");
    	}
 
    }
 
}

Code :

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   private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
      // il faut que tu déclares jList1 ne JList<String>
     Task task = new Task(jList1.getSelectedValuesList(), jTextArea1);
 
     task..addPropertyChangeListener(evt-> {
         if ("progress".equals(evt.getPropertyName())) {
              int progress = (Integer) evt.getNewValue();
             progressBar.setValue(progress); 
         }
      }); 
 
     task.execute();
   }

**benmia** · 17/03/2015, 15h16

Envoyé par joel.drigo

Oui, ou utilise un SwingWorker qui s'occupera de ce thread.

D'autre part, je ne comprends pas pourquoi tu ne traites pas tous tes objets dans une boucle : ça serait bien plus simple, éviterait de la duplication de code, et ça te permettrait de gérer plus facilement la progression réelle. A quoi sert model dans jButton2ActionPerformed ? Tu te compliques bien la vie.

Comme ça par exemple

Code :

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public class Task extends SwingWorker<Object, JSONObject> {
 
	private final static String PATH = "C:/Users/help/Desktop/";
 
	private final String[] values;
 
	private final JTextArea jtextArea;
 
	public Task(String[] values, JTextArea jtextArea) {
		this.values=values;
		this.jtextArea=jtextArea;
	}
 
	@Override
	protected Object doInBackground() throws Exception {
 
		int progression = 0;
 
		try( Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/reseau_social","root","root") ) {
			Statement stmt = connect.createStatement(); 
 
			for(String value : values) {
 
				createJSon(value, getTableName(value.toLowerCase()), getFileName(value.toLowerCase()), stmt);
				setProgress(++progression); // par exemple, pour une progression par objet
 
			}
 
		}
 
		return null;
	}
 
 
 
	private String getTableName(String value) {
		return value;
		/* ou si tu as besoin d'avoir des noms différents
 
		String tableName;
		switch(value) {
		case "user":
			tableName = "user";
			break;
		case "adress":
			tableName = "adress";
			break;
			// JE TE LAISSE COMPLETER
		default:
			throw new IllegalStateException();
		}
		return tableName;*/
	}
 
    private String getFileName(String value) {
    	//return value + ".json"
    	String filename;
		switch(value) {
		case "user":
			filename = "users";
			break;
		case "adress":
			filename = "adress";
			break;
			// JE TE LAISSE COMPLETER
		default:
			throw new IllegalStateException();
		}
		return filename + ".json";
	}
 
	private void createJSon(String value, String tableName, String fileName, Statement stmt) throws SQLException, IOException {
    	try(ResultSet rs1 = stmt.executeQuery( "select * from " + tableName )) { 
	        ResultSetMetaData resultMeta = rs1.getMetaData();
 
	        try( BufferedWriter writer = Files.newBufferedWriter(Paths.get(PATH, fileName)) ) {
 
	        	 while(rs1.next()){ 
	        		 JSONObject json = new JSONObject(); 
	        		 for(int i=1; i<=resultMeta.getColumnCount(); i++) {
	        			 String columnName = resultMeta.getColumnName(i);
	        			 json.put(columnName, rs1.getObject(i).toString()) ;
	        		 }
	        		 writer.write(json.toString());
	        		 writer.write(System.lineSeparator());
	        		 publish(json);
	        	 }
 
	        }
 
    	}
 
    }
 
    protected void process(java.util.List<JSONObject> chunks) {
 
    	for(JSONObject json : chunks) {
    		jtextArea.append(json.toString()+"\n");
    	}
 
    }
 
}

Code :

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   private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
      // il faut que tu déclares jList1 ne JList<String>
     Task task = new Task(jList1.getSelectedValuesList(), jTextArea1);
 
     task..addPropertyChangeListener(evt-> {
         if ("progress".equals(evt.getPropertyName())) {
              int progress = (Integer) evt.getNewValue();
             progressBar.setValue(progress); 
         }
      }); 
 
     task.execute();
   }