Gestion d'un Thread

Bonjour, dans code, je souhaiterai arrêter un thread puis le redémarrer ensuite lorsque qu'il se passe quelque chose mais je ne sais comment faire.

Voilà, ce que j'ai fait:
la classe ThreadLecteur qui gère le thread :

Code:

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public class ThreadLecteur extends Thread {
 
    public void run() {
 
        while (true) {
 
            Interface_Gardien.jTextFieldNumCodeBarre.setText(Interface_Gardien.CB);
            if (!Interface_Gardien.jTextFieldNumCodeBarre.getText().equals("")) {
                Interface_Gardien.thread.stop(); 
            }
        }
    }
}

classe Interface_Gardien (ici on s'intéresse qu'au thread qui est dans la partie de l'initialisation de la fenetre:

Code:

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/*
 * Interface_Gardien.java
 *
 * Created on 29 mai 2008, 10:34
 */
 
 
 
 
import java.awt.Color;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.lang.String;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.AbstractButton;
 
/**
 *
 * @author  adminlocal
 */
public class Interface_Gardien extends javax.swing.JFrame {
 
        GestionSystemeGardien ent = new GestionSystemeGardien();
        static ThreadLecteur thread = new ThreadLecteur();
        static String CB;
 
 
    /** Creates new form Interface_Gardien */
    public Interface_Gardien() {
        initComponents();
 
        setTitle("Interface du Gardien");     
 
        //centrage fenêtre
        ent.centrageFenetre(this);
 
        //Affichage caméra
        ent.affichageCamera(jPanelCam);
 
         //Connexion au lecteur code barre
        GestionLecteur l = new GestionLecteur(ent.m_Port_LCB_chaine);
        thread.start();
    }
 
 
 
    /** 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.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
 
        jPanelCam = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jPanelPhoto = new javax.swing.JPanel();
        jPanelAlarme = new javax.swing.JPanel();
        jToggleButtonArretAlarme = new javax.swing.JButton();
        jLabel3 = new javax.swing.JLabel();
        jSeparator1 = new javax.swing.JSeparator();
        jLabelPorte = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jToggleButtonPorte = new javax.swing.JToggleButton();
        jButtonPassageBadge = new javax.swing.JButton();
        jTextFieldNumCodeBarre = new javax.swing.JTextField();
        jLabel5 = new javax.swing.JLabel();
        jButtonTest = new javax.swing.JButton();
        jMenuBar1 = new javax.swing.JMenuBar();
        jMenu1 = new javax.swing.JMenu();
        jMenuItem1 = new javax.swing.JMenuItem();
        jMenu2 = new javax.swing.JMenu();
        jMenuItemConfiguration = new javax.swing.JMenuItem();
        jMenuItemMDP = new javax.swing.JMenuItem();
        jMenu3 = new javax.swing.JMenu();
        jMenuItemManuel = new javax.swing.JMenuItem();
        jMenuItemApropos = new javax.swing.JMenuItem();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
 
        jPanelCam.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
 
        org.jdesktop.layout.GroupLayout jPanelCamLayout = new org.jdesktop.layout.GroupLayout(jPanelCam);
        jPanelCam.setLayout(jPanelCamLayout);
        jPanelCamLayout.setHorizontalGroup(
            jPanelCamLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(0, 454, Short.MAX_VALUE)
        );
        jPanelCamLayout.setVerticalGroup(
            jPanelCamLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(0, 383, Short.MAX_VALUE)
        );
 
        jLabel1.setText("Caméra extérieure:");
 
        jLabel2.setText("Photo de l'employé:");
 
        jPanelPhoto.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
 
        org.jdesktop.layout.GroupLayout jPanelPhotoLayout = new org.jdesktop.layout.GroupLayout(jPanelPhoto);
        jPanelPhoto.setLayout(jPanelPhotoLayout);
        jPanelPhotoLayout.setHorizontalGroup(
            jPanelPhotoLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(0, 454, Short.MAX_VALUE)
        );
        jPanelPhotoLayout.setVerticalGroup(
            jPanelPhotoLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(0, 390, Short.MAX_VALUE)
        );
 
        jPanelAlarme.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
 
        org.jdesktop.layout.GroupLayout jPanelAlarmeLayout = new org.jdesktop.layout.GroupLayout(jPanelAlarme);
        jPanelAlarme.setLayout(jPanelAlarmeLayout);
        jPanelAlarmeLayout.setHorizontalGroup(
            jPanelAlarmeLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(0, 100, Short.MAX_VALUE)
        );
        jPanelAlarmeLayout.setVerticalGroup(
            jPanelAlarmeLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(0, 100, Short.MAX_VALUE)
        );
 
        jToggleButtonArretAlarme.setText("Marche/Arrêt Alarme");
        jToggleButtonArretAlarme.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jToggleButtonArretAlarmeActionPerformed(evt);
            }
        });
 
        jLabel3.setText("Déclenchement alarme:");
 
        jLabelPorte.setText("La porte est fermée");
 
        jLabel4.setText("Simulation de la porte:");
 
        jToggleButtonPorte.setText("Ouverture Porte");
        jToggleButtonPorte.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jToggleButtonPorteActionPerformed(evt);
            }
        });
 
        jButtonPassageBadge.setText("Passage du badge");
        jButtonPassageBadge.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButtonPassageBadgeActionPerformed(evt);
            }
        });
 
        jTextFieldNumCodeBarre.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextFieldNumCodeBarreActionPerformed(evt);
            }
        });
 
        jLabel5.setText("Numéro du code barre:");
 
        jButtonTest.setText("jButton1");
        jButtonTest.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButtonTestActionPerformed(evt);
            }
        });
 
        jMenu1.setText("Fichier");
 
        jMenuItem1.setText("Quitter");
        jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem1ActionPerformed(evt);
            }
        });
        jMenu1.add(jMenuItem1);
 
        jMenuBar1.add(jMenu1);
 
        jMenu2.setText("Configuration");
        jMenu2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenu2ActionPerformed(evt);
            }
        });
 
        jMenuItemConfiguration.setText("Paramétrage du matériel");
        jMenuItemConfiguration.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItemConfigurationActionPerformed(evt);
            }
        });
        jMenu2.add(jMenuItemConfiguration);
 
        jMenuItemMDP.setText("Modification du mot de passe");
        jMenuItemMDP.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItemMDPActionPerformed(evt);
            }
        });
        jMenu2.add(jMenuItemMDP);
 
        jMenuBar1.add(jMenu2);
 
        jMenu3.setText("?");
 
        jMenuItemManuel.setText("Manuel d'utilisation");
        jMenuItemManuel.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItemManuelActionPerformed(evt);
            }
        });
        jMenu3.add(jMenuItemManuel);
 
        jMenuItemApropos.setText("A propos...");
        jMenuItemApropos.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItemAproposActionPerformed(evt);
            }
        });
        jMenu3.add(jMenuItemApropos);
 
        jMenuBar1.add(jMenu3);
 
        setJMenuBar(jMenuBar1);
 
        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(83, 83, 83)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, jPanelPhoto, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, jLabel2)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, jLabel1)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, jPanelCam, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
                    .add(layout.createSequentialGroup()
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
                                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                                    .add(jToggleButtonArretAlarme)
                                    .add(layout.createSequentialGroup()
                                        .add(14, 14, 14)
                                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                                            .add(jLabel3)
                                            .add(jPanelAlarme, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))))
                                .add(160, 160, 160))
                            .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
                                .add(jSeparator1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 433, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                                .add(34, 34, 34))))
                    .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 191, Short.MAX_VALUE)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(layout.createSequentialGroup()
                                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                                    .add(org.jdesktop.layout.GroupLayout.LEADING, jTextFieldNumCodeBarre)
                                    .add(org.jdesktop.layout.GroupLayout.LEADING, jLabel5)
                                    .add(jButtonPassageBadge))
                                .add(18, 18, 18)
                                .add(jButtonTest))
                            .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
                                .add(jLabelPorte, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 103, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                                    .add(jToggleButtonPorte)
                                    .add(jLabel4))))
                        .add(94, 94, 94)))
                .add(38, 38, 38))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .add(45, 45, 45)
                        .add(jLabel1)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jPanelCam, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                    .add(layout.createSequentialGroup()
                        .add(164, 164, 164)
                        .add(jLabel3)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jPanelAlarme, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jToggleButtonArretAlarme)))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .add(jLabel2)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jPanelPhoto, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .addContainerGap(57, Short.MAX_VALUE))
                    .add(layout.createSequentialGroup()
                        .add(jSeparator1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 10, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(57, 57, 57)
                        .add(jLabel4)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jLabelPorte)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.UNRELATED)
                        .add(jToggleButtonPorte)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 195, Short.MAX_VALUE)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                            .add(jButtonPassageBadge)
                            .add(jButtonTest))
                        .add(18, 18, 18)
                        .add(jLabel5)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jTextFieldNumCodeBarre, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(61, 61, 61))))
        );
 
        pack();
    }// </editor-fold>                        
 
    private void jToggleButtonPorteActionPerformed(java.awt.event.ActionEvent evt) {                                                   
        // TODO add your handling code here:
 
        //Ouverture/Fermeture de la porte
        GestionGache porte = new GestionGache();
        AbstractButton bouton = (AbstractButton) evt.getSource();
        boolean selected = bouton.getModel().isSelected();
        if (selected) {
            porte.PorteOuverte(jLabelPorte);
        } else {
            porte.PorteFermee(jLabelPorte);
        }
    }                                                  
 
    private void jTextFieldNumCodeBarreActionPerformed(java.awt.event.ActionEvent evt) {                                                       
        // TODO add your handling code here:
}                                                      
 
    private void jMenu2ActionPerformed(java.awt.event.ActionEvent evt) {                                       
        // TODO add your handling code here:
 
    }                                      
 
    private void jButtonPassageBadgeActionPerformed(java.awt.event.ActionEvent evt) {                                                    
        // TODO add your handling code here:
        try {
            // TODO add your handling code here:
            String NumCodeBarre = "9204521220089";
 
 
 
            //Téléchargement de la photo
            ent.downloadFichier(NumCodeBarre, "photo_employe.jpg", ".jpg");
 
            //Affichage photo
            ent.affichagePhoto(jPanelPhoto);
 
            //Téléchargement du son
            ent.downloadFichier(NumCodeBarre, "son.wav", ".wav");
 
            //Lecture du son
            ent.lectureSon();
 
            //Requete
            ent.requete(NumCodeBarre);
 
 
            ent.majHeureEntree("9204521220089");
 
            //Connexion à la BdD
            /*GestionSystemGardien app = new GestionSystemGardien();
            app.ConnexionBdD("root", "root", "jdbc:mysql://10.104.100.57:3306/", "org.gjt.mm.mysql.Driver");*/
 
 
            /*GestionAutorisation a = new GestionAutorisation();
            a.HeureEntree();*/
 
        } catch (Exception ex) {
            Logger.getLogger(Interface_Gardien.class.getName()).log(Level.SEVERE, null, ex);
        }
    }                                                   
 
    private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {                                           
        // TODO add your handling code here:
        System.exit(0);
    }                                          
 
    private void jToggleButtonArretAlarmeActionPerformed(java.awt.event.ActionEvent evt) {                                                         
        // TODO add your handling code here:
          //Marche/Arrêt de l'alarme
        GestionAlarme alarme = new GestionAlarme(Color.WHITE, Color.RED, 1000,
                1000, jPanelAlarme);
        AbstractButton bouton = (AbstractButton) evt.getSource();
        boolean selected = bouton.getModel().isSelected();
        if (selected) {
            alarme.demarrer();
        } else {
            alarme.arreter(); 
        }
    }                                                        
 
    private void jMenuItemConfigurationActionPerformed(java.awt.event.ActionEvent evt) {                                                       
        // TODO add your handling code here:
        new Parametrage().setVisible(true);
}                                                      
 
    private void jButtonTestActionPerformed(java.awt.event.ActionEvent evt) {                                            
        // TODO add your handling code here:
        jTextFieldNumCodeBarre.setText("");
        thread.start();      
    }                                           
 
    private void jMenuItemMDPActionPerformed(java.awt.event.ActionEvent evt) {                                             
        // TODO add your handling code here:
        new ChangerMP().setVisible(true);
}                                            
 
    private void jMenuItemAproposActionPerformed(java.awt.event.ActionEvent evt) {                                                 
        // TODO add your handling code here:
}                                                
 
    private void jMenuItemManuelActionPerformed(java.awt.event.ActionEvent evt) {                                                
        // TODO add your handling code here:
    }                                               
 
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Interface_Gardien().setVisible(true);
            }
        });
    }
 
    // Variables declaration - do not modify                     
    private javax.swing.JButton jButtonPassageBadge;
    private javax.swing.JButton jButtonTest;
    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.JLabel jLabelPorte;
    private javax.swing.JMenu jMenu1;
    private javax.swing.JMenu jMenu2;
    private javax.swing.JMenu jMenu3;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JMenuItem jMenuItem1;
    private javax.swing.JMenuItem jMenuItemApropos;
    private javax.swing.JMenuItem jMenuItemConfiguration;
    private javax.swing.JMenuItem jMenuItemMDP;
    private javax.swing.JMenuItem jMenuItemManuel;
    private javax.swing.JPanel jPanelAlarme;
    private javax.swing.JPanel jPanelCam;
    private javax.swing.JPanel jPanelPhoto;
    private javax.swing.JSeparator jSeparator1;
    public static javax.swing.JTextField jTextFieldNumCodeBarre;
    private javax.swing.JButton jToggleButtonArretAlarme;
    private javax.swing.JToggleButton jToggleButtonPorte;
    // End of variables declaration                   
 
}

la classe GestionLecteur (qui gère le lecteur code barre):

Code:

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import javax.comm.*;
import com.sun.comm.Win32Driver;
import java.io.*;
import java.util.*;
 
public class GestionLecteur extends Thread implements SerialPortEventListener {
 
        GestionSystemeGardien gest = new GestionSystemeGardien();
 
	private CommPortIdentifier portId;
	private SerialPort serialPort;
	private BufferedReader fluxLecture;
        private PrintStream serial_out = null;
	private boolean running;
        private String NumCodeBarre;
	/**
         * Constructeur qui récupère l'identifiant du port et lance l'ouverture.
        */
 
	public GestionLecteur(String port) {
		//initialisation du driver
  		Win32Driver w32Driver = new Win32Driver();
		w32Driver.initialize();
 
		//récupération de l'identifiant du port
		try {
			portId = CommPortIdentifier.getPortIdentifier(port);
		} catch (NoSuchPortException e) {
		}
 
		//ouverture du port
		try {
			serialPort = (SerialPort) portId.open("ModeEvenement", 2000);
		} catch (PortInUseException e) {
		}
		//récupération du flux
		try {
			fluxLecture =
				new BufferedReader(
				new InputStreamReader(serialPort.getInputStream()));
		} catch (IOException e) {
		}
		//ajout du listener
		try {
			serialPort.addEventListener(this);
		} catch (TooManyListenersException e) {
		}
		//paramétrage du port
		serialPort.notifyOnDataAvailable(true);
		try {
 
			serialPort.setSerialPortParams(
                                gest.Vitesse,
				gest.Donnees,
				gest.Stop,
				gest.Parite);
		} catch (UnsupportedCommOperationException e) {
		}
		System.out.println("port ouvert, attente de lecture");
	}
    @Override
	public void run() {
		running = true;
		while (running) {
			try {
				Thread.sleep(2000);
			} catch (InterruptedException e) {
			}
		}
		//fermeture du flux et port
		try {
			fluxLecture.close();
		} catch (IOException e) {
		}
		serialPort.close();
	}
	/**
         * Méthode de gestion des événements.
         */
	public void serialEvent(SerialPortEvent event) throws IOException {
		//gestion des événements sur le port :
		//on ne fait rien sauf quand les données sont disponibles
		switch (event.getEventType()) {
			case SerialPortEvent.DATA_AVAILABLE :
                            serial_out = new PrintStream(serialPort.getOutputStream(), true, "ISO-8859-1");
				NumCodeBarre = new String(); 
				try {
					//lecture du buffer et affichage
					NumCodeBarre = (String) fluxLecture.readLine();
                                        Interface_Gardien.CB = NumCodeBarre;
					//InterLC.Recup_Code.setText(codeBarre);
				} catch (IOException e) {
				}
				break;
		}
 
 
	}
 
        public String getNumCodeBarre()
        {
            return this.NumCodeBarre;          
        }
 
	/**
         * Permet l'arrêt du thread
         */
	public void stopThread() {
		running = false;
	}
	/**
         * Méthode principale de l'exemple.
         */
	public static void main(String[] args) {
		//Récuperation du port en argument
		String port = "COM1";
		//lancement de l'appli
		GestionLecteur modeEve=new GestionLecteur(port);
		modeEve.start();
		//"interface utilisateur"
		System.out.println("taper q pour quitter");
		//construction flux lecture
		BufferedReader clavier =
			new BufferedReader(new InputStreamReader(System.in));
		//lecture sur le flux entrée.
		try {
			String lu = clavier.readLine();
			while (!lu.equals("esc")) {
			}
		} catch (IOException e) {
		}
		modeEve.stopThread();
	}
}

En faite, je voudrais que lorqu'il y a un code barre de détecter, le thread s'arrête. Et que le thread redémarre quand je clique sur un bouton. Comment faire ?

Merci d'avance.