Bonjour,

Je ne parviens pas à exécuter ma classe.

Voici mon code
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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package mini.projet.GWI;
 
import java.util.List;
 
/**
 * @author jaafar
 */
public class ScanIP extends javax.swing.JFrame {
 
    /**
     * Creates new form ScanIP
     */
    public ScanIP() {
          AgentSnmp snmp = new AgentSnmp("");
        List<String> a = snmp.getIp();
 
        for (String s : a) {
            jComboBox1.addItem(s);
        }
        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() {
 
        jComboBox1 = new javax.swing.JComboBox();
        jButton1 = new javax.swing.JButton();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
 
        jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { " " }));
        jComboBox1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jComboBox1ActionPerformed(evt);
            }
        });
 
        jButton1.setText("jButton1");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });
 
        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(56, 56, 56)
                .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, 95, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 140, Short.MAX_VALUE)
                .addComponent(jButton1)
                .addGap(36, 36, 36))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(44, 44, 44)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton1))
                .addContainerGap(233, Short.MAX_VALUE))
        );
 
        pack();
    }// </editor-fold>                        
 
    private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {                                           
    }                                          
 
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        Scan s = new Scan(jComboBox1.getSelectedItem().toString());
        s.setVisible(true);
    }                                        
 
    /**
     * @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(ScanIP.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(ScanIP.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(ScanIP.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(ScanIP.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 ScanIP().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify                     
    private javax.swing.JButton jButton1;
    private javax.swing.JComboBox jComboBox1;
    // End of variables declaration                   
}
L'appel de méthode getIp()
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public List<String> getIp(){
    List<String> liste = new ArrayList<String>();
        for (int i=0;i<255;i++) {
                for(int j=0;j<255;j++){
 
                String address = "192.168."+i+"."+j;
 
                if(ping(address))
                    liste.add(address);
                }
            }
                for (int i=0;i<255;i++) {
                for(int j=0;j<255;j++){
 
                String address = "172.16."+i+"."+j;
 
 
                if(ping(address))
                    liste.add(address);
                }
            }
        return liste;
    }
Quelqu'un saurait-il m'indiquer d'où peut venir le problème ?

Merci d'avance pour votre aide.