Voila la class phasedejeu en entier:

package fourmiliere;



import javax.swing.JFrame;
import javax.swing.*;
import java.awt.*;
import javax.swing.border.TitledBorder;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2007</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class phasedejeu extends JFrame{

       public phasedejeu() {

           //Icon tigerIcon = new ImageIcon("Creative player 128.gif");

         try {
            jbInit();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        this.setDefaultCloseOperation(EXIT_ON_CLOSE);
        this.setLocation(100,100);
        this.setSize(700,550);
       this.setTitle("Simulation");
      this.setVisible(true);

    }

    private void jbInit() throws Exception {
        jLabel1.setForeground(Color.white);
        jLabel1.setText("jLabel1");
        jTextField3.setText("jTextField3");
        jTextField4.setText("jTextField4");
        jLabel3.setForeground(Color.white);
        jLabel3.setText("jLabel3");
        jLabel4.setForeground(Color.white);
        jLabel4.setText("jLabel4");
        jTextField5.setText("jTextField5");
        jTextField6.setText("jTextField6");
        jLabel5.setForeground(Color.white);
        jLabel5.setText("jLabel5");
        jLabel6.setForeground(Color.white);
        jLabel6.setText("jLabel6");
        jLabel7.setForeground(Color.white);
        jLabel7.setText("jLabel7");
        jLabel8.setForeground(Color.white);
        jLabel8.setText("jLabel8");
        jLabel9.setForeground(Color.white);
        jLabel9.setText("jLabel9");
        jLabel10.setForeground(Color.white);
        jLabel10.setText("jLabel10");
        jPanel3.setLayout(flowLayout2);
        jPanel4.setLayout(gridLayout2);
        gridLayout2.setColumns(4);
        gridLayout2.setRows(2);
        jLabel11.setForeground(Color.white);
        jLabel11.setToolTipText("");
        jLabel11.setHorizontalAlignment(SwingConstants.CENTER);
        jLabel11.setHorizontalTextPosition(SwingConstants.CENTER);
        jLabel11.setText("           Vitesse de la Simulation");
        jPanel1.setBackground(SystemColor.desktop);
        jPanel1.setPreferredSize(new Dimension(100, 500));
        jPanel1.setToolTipText("");
        jPanel1.setLayout(flowLayout1);
        gridLayout1.setHgap(5);
        gridLayout1.setVgap(10);
        flowLayout1.setVgap(20);
        this.setResizable(true);

        jButton2.setMaximumSize(new Dimension(33, 33));
        jButton2.setMinimumSize(new Dimension(33, 33));
        jButton2.setPreferredSize(new Dimension(33, 33));
        jButton2.setHorizontalTextPosition(SwingConstants.CENTER);

        jButton1.setMaximumSize(new Dimension(33, 33));
        jButton1.setMinimumSize(new Dimension(33, 33));
        jButton1.setPreferredSize(new Dimension(33, 33));
        jButton1.setHorizontalTextPosition(SwingConstants.CENTER);

        jPanel3.setBackground(SystemColor.desktop);
        jPanel6.setBackground(SystemColor.desktop);
        jPanel7.setBackground(SystemColor.desktop);
        jPanel2.setBackground(SystemColor.desktop);
        jLabel2.setForeground(Color.white);
        jPanel4.setBackground(SystemColor.desktop);
        jSlider1.setBackground(SystemColor.desktop);
        jSlider1.setForeground(Color.white);
        this.getContentPane().add(jPanel1, java.awt.BorderLayout.WEST);
        jPanel1.add(jPanel2, null);
        jPanel2.setLayout(gridLayout1);
        gridLayout1.setColumns(1);
        gridLayout1.setRows(15);
        jLabel2.setText("jLabel2");
        jPanel2.add(jLabel2);
        jPanel2.add(jLabel10);
        jPanel2.add(jTextField6);
        jPanel2.add(jLabel9);
        jPanel2.add(jLabel8);
        jPanel2.add(jTextField5);
        jPanel2.add(jLabel7);
        jPanel2.add(jLabel6);
        jPanel2.add(jTextField4);
        jPanel2.add(jLabel5);
        jPanel2.add(jLabel4);
        jPanel2.add(jTextField3);
        jPanel2.add(jLabel3);
        jPanel2.add(jLabel1);
        jPanel3.add(jPanel4);
        jPanel4.add(jLabel11);
        jPanel4.add(jButton2);
        jPanel4.add(jSlider1);
        jPanel4.add(jButton1);
        this.getContentPane().add(jPanel5, java.awt.BorderLayout.CENTER);
        this.getContentPane().add(jPanel3, java.awt.BorderLayout.SOUTH);
        this.getContentPane().add(jPanel6, java.awt.BorderLayout.EAST);
        this.getContentPane().add(jPanel7, java.awt.BorderLayout.NORTH);
    }

    JPanel jPanel1 = new JPanel();
    JPanel jPanel2 = new JPanel();
    GridLayout gridLayout1 = new GridLayout();
    JLabel jLabel2 = new JLabel();
    JLabel jLabel1 = new JLabel();
    JTextField jTextField3 = new JTextField();
    JTextField jTextField4 = new JTextField();
    JLabel jLabel3 = new JLabel();
    JLabel jLabel4 = new JLabel();
    JTextField jTextField5 = new JTextField();
    JTextField jTextField6 = new JTextField();
    JLabel jLabel5 = new JLabel();
    JLabel jLabel6 = new JLabel();
    JLabel jLabel7 = new JLabel();
    JLabel jLabel8 = new JLabel();
    JLabel jLabel9 = new JLabel();
    JLabel jLabel10 = new JLabel();
    JPanel jPanel3 = new JPanel();
    FlowLayout flowLayout2 = new FlowLayout();
    JPanel jPanel4 = new JPanel();
    GridLayout gridLayout2 = new GridLayout();
    JSlider jSlider1 = new JSlider();
    JLabel jLabel11 = new JLabel();
    FlowLayout flowLayout1 = new FlowLayout();

    private JPanelDessin2 jPanel5 = new JPanelDessin2(this);


  private Dimension dim = jPanel5.getSize() ;
  private int larg = dim.width ;
  private int haut = dim.height;

  public int getLarg(){
    return larg;
  }

  public void setLarg(int x){
         larg=x;
  }

  public int getHaut(){
        return haut;
  }

  public void setHaut(int y){
         haut=y;
  }


    JPanel jPanel6 = new JPanel();
    JPanel jPanel7 = new JPanel();
    TitledBorder titledBorder1 = new TitledBorder("");

    Icon tigerIcon = new ImageIcon("stop.gif");
    JButton jButton1 = new JButton("",tigerIcon);

    Icon stopIcon = new ImageIcon("lecture2.gif");
     JButton jButton2 = new JButton("",stopIcon);

   Icon fourmIcon = new ImageIcon("fourmis.gif");
}

classe principale:

package fourmiliere;

/**
 * <p>Titre : </p>
 *
 * <p>Description : </p>
 *
 * <p>Copyright : Copyright (c) 2007</p>
 *
 * <p>Société : </p>
 *
 * @author non attribuable
 * @version 1.0
 */
public class principale {
    public principale() {
        try {
            jbInit();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    public static void main(String[] args) {
        Bienvenue monBienvenue = new Bienvenue();
       phasedejeu maphasedejeu=new phasedejeu();
        Bilan monBilan=new Bilan();
      Erreur monErreur=new Erreur();
    }

    private void jbInit() throws Exception {
    }
}