Besoin D'aide (Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException

**Tengoa** · 21/12/2008, 13h45

Bonjour à Tous,

Merci à tous pour votre aide

Voici tout d'abord mon erreur

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at medisoft.PatientDB.AddPatient(PatientDB.java:39)
at medisoft.Ajouter.jButton3_actionPerformed(Ajouter.java:247)
at medisoft.Ajouter_jButton3_actionAdapter.actionPerformed(Ajouter.java:290)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
at java.awt.Component.processMouseEvent(Component.java:5488)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3093)
at java.awt.Component.processEvent(Component.java:5253)
at java.awt.Container.processEvent(Container.java:1966)
at java.awt.Component.dispatchEventImpl(Component.java:3955)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
at java.awt.Container.dispatchEventImpl(Container.java:2010)
at java.awt.Window.dispatchEventImpl(Window.java:1774)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

Et Voici Les classe d'ou vient l'erreur

Code :

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package medisoft;
import java.awt.BorderLayout;
 
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.Rectangle;
import java.awt.Font;
import javax.swing.SwingConstants;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JList;
import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import java.awt.Color;
import javax.swing.BorderFactory;
import java.awt.SystemColor;
import javax.swing.JOptionPane;
import java.awt.event.KeyEvent;
import java.awt.event.KeyAdapter;
 
 
public class Ajouter extends JFrame {
    public Ajouter() {
        try {
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }
 
    private void jbInit() throws Exception {
        this.getContentPane().setBackground(SystemColor.inactiveCaption);
        this.setCursor(null);
        this.setJMenuBar(null);
        this.setResizable(false);
        this.setTitle("Gestionaire MEDISOFT");
        this.setVisible(true);
        this.getContentPane().setLayout(null);
        this.setBounds(200,100,630,520);
        jLabel1.setFont(new java.awt.Font("Tahoma", Font.BOLD, 15));
        jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
        jLabel1.setText("Nouveau Patient");
        jLabel1.setBounds(new Rectangle(0, 12, 630, 29));
        jLabel2.setText("Nom & Prénom");
        jLabel2.setBounds(new Rectangle(62, 72, 99, 14));
        jLabel3.setText("CIN");
        jLabel3.setBounds(new Rectangle(62, 108, 50, 14));
        jLabel4.setText("Sexe");
        jLabel4.setBounds(new Rectangle(62, 141, 64, 14));
        jLabel5.setText("Adresse");
        jLabel5.setBounds(new Rectangle(62, 179, 71, 14));
        jLabel6.setText("Téléphone");
        jLabel6.setBounds(new Rectangle(62, 211, 67, 14));
        jLabel7.setText("Médecin Traitant");
        jLabel7.setBounds(new Rectangle(62, 243, 100, 14));
        jLabel8.setText("Mutualiste");
        jLabel8.setBounds(new Rectangle(62, 277, 96, 14));
        jLabel9.setText("Antécédants Médicaux");
        jLabel9.setBounds(new Rectangle(62, 308, 131, 14));
        jTextArea1.setBorder(BorderFactory.createEtchedBorder());
        jTextArea1.setBounds(new Rectangle(197, 308, 205, 80));
        jTextField2.setBounds(new Rectangle(197, 243, 205, 19));
        jTextField3.setBounds(new Rectangle(197, 211, 205, 19));
        jTextField4.setBounds(new Rectangle(197, 179, 205, 19));
        jRadioButton1.setBackground(SystemColor.inactiveCaption);
        jRadioButton1.setSelected(true);
        jRadioButton1.setText("Masculin");
        jRadioButton1.setBounds(new Rectangle(196, 139, 94, 21));
        jRadioButton1.addActionListener(new Ajouter_jRadioButton1_actionAdapter(this));
        jRadioButton2.setBackground(SystemColor.inactiveCaption);
        jRadioButton2.setText("Féminin");
        jRadioButton2.setBounds(new Rectangle(292, 138, 93, 23));
        jLabel13.setFont(new java.awt.Font("Tahoma", Font.BOLD | Font.ITALIC,
                                           11));
        jLabel13.setForeground(Color.darkGray);
        jLabel13.setText("Seules les Lettres sont Acceptées");
        jLabel13.setBounds(new Rectangle(412, 243, 205, 19));
        jLabel11.setFont(new java.awt.Font("Tahoma", Font.BOLD | Font.ITALIC,
                                           11));
        jLabel11.setForeground(Color.darkGray);
        jLabel11.setText("Seules les Lettres sont Acceptées");
        jLabel11.setBounds(new Rectangle(412, 72, 205, 19));
        jRadioButton3.setBackground(SystemColor.inactiveCaption);
        jRadioButton3.setSelected(true);
        jRadioButton3.setText("Oui");
        jRadioButton3.setBounds(new Rectangle(200, 277, 93, 23));
        jRadioButton4.setBackground(SystemColor.inactiveCaption);
        jRadioButton4.setText("Non");
        jRadioButton4.setBounds(new Rectangle(292, 277, 93, 23));
        jLabel12.setFont(new java.awt.Font("Tahoma", Font.BOLD | Font.ITALIC,
                                           11));
        jLabel12.setForeground(Color.darkGray);
        jLabel12.setText("Seuls les Chiffres sont Acceptés");
        jLabel12.setBounds(new Rectangle(412, 211, 205, 19));
        radioGroup.add(jRadioButton1);
        radioGroup.add(jRadioButton2);
        radioGroup2.add(jRadioButton3);
        radioGroup2.add(jRadioButton4);
        jTextField5.setBounds(new Rectangle(197, 108, 205, 19));
        jTextField6.setBounds(new Rectangle(197, 72, 205, 19));
        jButton1.setBounds(new Rectangle(93, 423, 130, 23));
        jButton1.setToolTipText("Retour au Menu Principal");
        jButton1.setText("Menu Principal");
        jButton1.addActionListener(new Ajouter_jButton1_actionAdapter(this));
        jButton2.setBounds(new Rectangle(467, 423, 73, 23));
        jButton2.setToolTipText("Retour à la Gestion des Patients");
        jButton2.setText("Retour");
        jButton2.addActionListener(new Ajouter_jButton2_actionAdapter(this));
        jButton3.setBounds(new Rectangle(280, 423, 106, 23));
        jButton3.setToolTipText("Enregistrer le Patient");
        jButton3.setText("Enregistrer");
        jButton3.addActionListener(new Ajouter_jButton3_actionAdapter(this));
        this.getContentPane().add(jLabel1);
        this.getContentPane().add(jLabel2);
        this.getContentPane().add(jLabel3);
        this.getContentPane().add(jLabel5);
        this.getContentPane().add(jLabel6);
        this.getContentPane().add(jLabel7);
        this.getContentPane().add(jLabel8);
        this.getContentPane().add(jLabel4);
        this.getContentPane().add(jLabel9);
        this.getContentPane().add(jTextArea1);
        this.getContentPane().add(jTextField2);
        this.getContentPane().add(jTextField3);
        this.getContentPane().add(jTextField4);
        this.getContentPane().add(jRadioButton2);
        this.getContentPane().add(jTextField5);
        this.getContentPane().add(jTextField6);
        this.getContentPane().add(jLabel11);
        this.getContentPane().add(jLabel13);
        this.getContentPane().add(jRadioButton3);
        this.getContentPane().add(jRadioButton4);
        this.getContentPane().add(jLabel12);
        this.getContentPane().add(jRadioButton1);
        this.getContentPane().add(jButton3);
        this.getContentPane().add(jButton1);
        this.getContentPane().add(jButton2);
        jTextField3.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyTyped(KeyEvent source) {
                int k = source.getKeyChar();
                if (k == 46)
                    source.setKeyChar((char) KeyEvent.VK_CLEAR);
                else if ((k > 47 && k < 58) ||
                         (k == 8 || k == KeyEvent.VK_PERIOD)) {} else {
                    source.setKeyChar((char) KeyEvent.VK_CLEAR);
                }
            }
        });
        jTextField6.addKeyListener(new KeyAdapter() {
            public void keyTyped(KeyEvent source) {
                int k = source.getKeyChar();
                if (k == 46)
                    source.setKeyChar((char) KeyEvent.VK_CLEAR);
                else if ((k > 64 && k < 91) || (k > 96 && k < 123) ||
                         (k == 8 || k == KeyEvent.VK_PERIOD)) {} else {
                    source.setKeyChar((char) KeyEvent.VK_CLEAR);
                }
            }
        });
        jTextField2.addKeyListener(new KeyAdapter() {
            public void keyTyped(KeyEvent source) {
                int k = source.getKeyChar();
                if (k == 46)
                    source.setKeyChar((char) KeyEvent.VK_CLEAR);
                else if ((k > 64 && k < 91) || (k > 96 && k < 123) ||
                         (k == 8 || k == KeyEvent.VK_PERIOD)) {} else {
                    source.setKeyChar((char) KeyEvent.VK_CLEAR);
                }
            }
        });
  }
    PatientDB sdb =  new PatientDB();
    JLabel jLabel1 = new JLabel();
    JLabel jLabel2 = new JLabel();
    JLabel jLabel3 = new JLabel();
    JLabel jLabel4 = new JLabel();
    JLabel jLabel5 = new JLabel();
    JLabel jLabel6 = new JLabel();
    JLabel jLabel7 = new JLabel();
    JLabel jLabel8 = new JLabel();
    JLabel jLabel9 = new JLabel();
    JTextArea jTextArea1 = new JTextArea();
    JTextField jTextField2 = new JTextField();
    JTextField jTextField3 = new JTextField();
    JTextField jTextField4 = new JTextField();
    JRadioButton jRadioButton1 = new JRadioButton();
    JRadioButton jRadioButton2 = new JRadioButton();
    ButtonGroup radioGroup = new ButtonGroup();
    ButtonGroup radioGroup2 = new ButtonGroup();
    JTextField jTextField5 = new JTextField();
    JTextField jTextField6 = new JTextField();
    JButton jButton1 = new JButton();
    JButton jButton2 = new JButton();
    JButton jButton3 = new JButton();
    JLabel jLabel13 = new JLabel();
    JLabel jLabel11 = new JLabel();
    JRadioButton jRadioButton3 = new JRadioButton();
    JRadioButton jRadioButton4 = new JRadioButton();
    JLabel jLabel12 = new JLabel();
    public void jRadioButton1_actionPerformed(ActionEvent actionEvent) {
 
    }
 
    public void jButton2_actionPerformed(ActionEvent actionEvent) {
        this.setVisible(false);
        General layout = new General();
        layout.setVisible(true);
    }
 
    public void jButton3_actionPerformed(ActionEvent actionEvent) {
        String gender, mutualiste;
        gender = "Masculin";
        mutualiste = "Non";
       if (jTextArea1.getText().compareTo("") == 0 ||
            jTextField2.getText().compareTo("") == 0 ||
            jTextField3.getText().compareTo("") == 0 ||
            jTextField4.getText().compareTo("") == 0 ||
            jTextField5.getText().compareTo("") == 0 ||
            jTextField6.getText().compareTo("") == 0) {
          String ms = "Veuillez remplir tous les champs requis. SVP!!";
          JOptionPane.showMessageDialog(null, ms);
        }
        else {
              if(jRadioButton1.isSelected())
                  gender="Masculin";
              else
                  gender="Féminin";
              if(jRadioButton3.isSelected())
                  mutualiste = "Oui";
              else
                  mutualiste = "Non";
 
              sdb.AddPatient(jTextField6.getText().toString(), jTextField5.getText().toString(),
                             gender, jTextField4.getText().toString(), jTextField3.getText().toString(),
                             jTextField2.getText().toString(), mutualiste, jTextArea1.getText().toString());
              String message = "Le produit a été ajouté à la base de données.";
              JOptionPane.showMessageDialog(null, message);
              sdb.CloseDB();
        }
 
        this.jTextArea1.setText(null);
        this.jTextField3.setText(null);
        this.jTextField4.setText(null);
        this.jTextField6.setText(null);
        this.jTextField5.setText(null);
        this.jTextField2.setText(null);
    }
 
    public void jButton1_actionPerformed(ActionEvent actionEvent) {
        this.setVisible(false);
        Home layout2 = new Home();
        layout2.setVisible(true);
    }
}
 
 
class Ajouter_jButton1_actionAdapter implements ActionListener {
    private Ajouter adaptee;
    Ajouter_jButton1_actionAdapter(Ajouter adaptee) {
        this.adaptee = adaptee;
    }
 
    public void actionPerformed(ActionEvent actionEvent) {
        adaptee.jButton1_actionPerformed(actionEvent);
    }
}
 
 
class Ajouter_jButton3_actionAdapter implements ActionListener {
    private Ajouter adaptee;
    Ajouter_jButton3_actionAdapter(Ajouter adaptee) {
        this.adaptee = adaptee;
    }
 
    public void actionPerformed(ActionEvent actionEvent) {
        adaptee.jButton3_actionPerformed(actionEvent);
    }
}
 
 
class Ajouter_jButton2_actionAdapter implements ActionListener {
    private Ajouter adaptee;
    Ajouter_jButton2_actionAdapter(Ajouter adaptee) {
        this.adaptee = adaptee;
    }
 
    public void actionPerformed(ActionEvent actionEvent) {
        adaptee.jButton2_actionPerformed(actionEvent);
    }
}
 
 
class Ajouter_jRadioButton1_actionAdapter implements ActionListener {
    private Ajouter adaptee;
    Ajouter_jRadioButton1_actionAdapter(Ajouter adaptee) {
        this.adaptee = adaptee;
    }
 
    public void actionPerformed(ActionEvent actionEvent) {
        adaptee.jRadioButton1_actionPerformed(actionEvent);
    }
}

Code :

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package medisoft;
 
 
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.ResultSetMetaData;
import javax.swing.JOptionPane;
 
public class PatientDB {
 
  public Connection myCon=null;
 
  public PatientDB() {
 
     String DRIVER = "com.borland.datastore.jdbc.DataStoreDriver";
     String URL = "jdbc:borland:dslocal:";
     String FILE = "database/PATIENT.jds";
 
     try {
       Class.forName(DRIVER);
       myCon = DriverManager.getConnection(URL + FILE, "Mehdi", " ");
     }
     catch (Exception e) {
 
       System.out.println(e);
     }
  }
 
  public boolean AddPatient(String name, String cin, String gender,
                          String address, String phone, String traitant, String mutualiste,
                          String antecedants) {
 
    ResultSet r = null;
 
    try {
      Statement s = myCon.createStatement();
      r = s.executeQuery("Select * from patient where CIN='" + cin +"'");
 
      if ( (r.next())) {
        String message = "Le patient existe déjà dans la base données, Veuillez changer le numéro de la carte nationale";
        JOptionPane.showMessageDialog(null, message);
        return false;
      }
      else {
        try {
          this.myCon.createStatement().execute("insert into PATIENT values ('" + name + "','" + cin + "','" + gender + "','" +
                                               address + "','" + phone + "','" + traitant + "','" + mutualiste + "','" + antecedants +"')");
        }
        catch (SQLException ex) {
          return false;
        }
        return true;
      }
    }
    catch (SQLException ex) {
      System.err.println("" + ex);
    }
    return false;
 }
 
  public ResultSet Search(String name) {
    ResultSet r=null;
    try {
 
      Statement s = this.myCon.createStatement();
      r = s.executeQuery("Select * from PATIENT where NOM= '" + name + "'");
    }
    catch (SQLException ex) {
      return null;
    }
 return r;
 }
 
 
    public boolean Delete_Name(String name) {
      ResultSet r = null;
 
      try {
        Statement s = this.myCon.createStatement();
        r = s.executeQuery("Select * from PATIENT where \"LAST_NAME\"='" + name +
                           "'");
        if (! (r.next())) {
          return false;
        }
        else {
          try {
            this.myCon.createStatement().execute(
                "delete from PATIENT where \"LAST_NAME\"='" + name + "'");
          }
          catch (SQLException ex) {
            return false;
          }
          return true;
 
        }
      }
      catch (SQLException ex) {
        System.err.println("" + ex);
      }
      return false;
    }
 
public  ResultSet ViewAll() {
  ResultSet r= null;
try{
    Statement s = this.myCon.createStatement();
    r = s.executeQuery("Select * from PATIENT");
     ResultSetMetaData rs = r.getMetaData();
 
  }
  catch (SQLException ex) {
 
    return null;
  }
 
return r;
}
 
    public void CloseDB() {
        try {
          this.myCon.close();
        }
        catch (SQLException ex) {
          ex.printStackTrace();
        }
    }
    private void jbInit() throws Exception {
    }
}

Je ne suis pas trop experte en Java alors je ne sais pas trop comment resoudre ce probleme

Merci beaucoup d'avance

**DeathMaker** · 21/12/2008, 14h33

Le problème vient de la ligne 39 de la classe PatientDB.

Pourrai tu nous dire à quoi correspond la ligne 39 ?

D'instinct, je dirai que ta connection est nulle...

**Tengoa** · 21/12/2008, 14h57

Envoyé par DeathMaker

Le problème vient de la ligne 39 de la classe PatientDB.

Pourrai tu nous dire à quoi correspond la ligne 39 ?

D'instinct, je dirai que ta connection est nulle...

Statement s = this.myCon.createStatement();
r = s.executeQuery("Select * from patient where CIN='" + cin +"'");
}

Statement s = this.myCon.createStatement(); Voila la ligne 39

J'ai pas compris... Comment ca ma connexion?

**Balbuzard** · 21/12/2008, 15h55

Salut !

Apparemment, tu as bien instancié ta connexion myCon. Donc s'il te renvoie une erreur, je dirais que c'est l'objet avec lequel tu l'as instancié qui n'est pas lui-même correctement instancié.

C'est le Driver que tu as instancié par l'instruction Class.forName(DRIVER);

Essaie plutôt Class.forName(DRIVER).newInstance();

histoire de voir ce que ça donne

bon courage ;-)

**murgen23** · 23/12/2008, 08h34

Merci, j'ai appris quelque chose

Besoin D'aide (Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException

JDBC Java

Vue hybride

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