Gestion de banque

je veux creer une fenetre qui gerent les operations bancaires debiter,crediter et le virement
j'est cree 5 classes compte,client,banque (banque extends client et client extends compte),fenetre,et Newmain.le probleme est au niveau du JTextfield je ne sais pas comment modifer le solde initial par la methode debiter.voila les 5 fichiers txt
fenetre

package banque;

import static com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type.Int;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Calendar;
import java.util.Locale;
import javax.swing.BoxLayout;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.JToggleButton;

public class fenetre extends JFrame implements ActionListener {
   
    Calendar cal = Calendar.getInstance();
    JPanel pan1 = new JPanel();
    JPanel pan2 = new JPanel();
    JPanel pan3 = new JPanel();
    JPanel pan4 = new JPanel();
    JPanel pan5 = new JPanel();
    JPanel pan6 = new JPanel();
    JPanel pan7 = new JPanel();
    Compte c = new Compte(0,true,0);
    private JLabel label1 = new JLabel("Nom du client");
    private JLabel label2 = new JLabel("Prenom");
    private JLabel label3 = new JLabel("numero du compte");
    private JLabel label7 = new JLabel("Heure");
    private JLabel label5 = new JLabel("minute");
    private JLabel label6 = new JLabel("seconde");
    private JLabel label8 = new JLabel("date de modification");
    private JLabel label9 = new JLabel("Solde actuelle");
    private JLabel label10 = new JLabel("Nouveau solde");
    private JTextField compte;
    private  JTextField nom;
    private JTextField prenom;
    private JTextField heure;
    private JTextField minute;
    private JTextField seconde;
    private JTextField s1;
    private JTextField s2;
    private JLabel label4 = new JLabel("Activer/desactiver le virement");
    private JToggleButton b1 = new JToggleButton("debiter");
    private JToggleButton b2 = new JToggleButton("crediter");
    private JToggleButton b3 = new JToggleButton("virement");
    
    private String[] ac={"Activer","Desactiver"};
    private JComboBox c1= new JComboBox(ac);
    public fenetre(){
    nom = new JTextField(7);
    prenom = new JTextField(7);
    compte =new JTextField(7);
    heure = new JTextField(7);
    minute= new JTextField(7);
    seconde = new JTextField(7);
    s1 = new JTextField(5);
    s2 = new JTextField(5);
    pan1.setLayout(new GridLayout(6,1));
    pan1.add(label1);
    pan1.add(nom);
    pan1.add(label2);
    pan1.add(prenom);
    pan1.add(label4);
    pan1.add(c1);
    pan1.add(label3);
    pan1.add(compte);
    pan1.add(label9);
    pan1.add(s1);
    heure.setText(""+cal.get(Calendar.HOUR)+"");
    minute.setText(""+cal.get(Calendar.MINUTE)+"");
    seconde.setText(""+cal.get(Calendar.SECOND)+"");
    pan2.setLayout(new BorderLayout());
    pan2.add(pan1,BorderLayout.NORTH);
    pan3.setLayout(new GridLayout(1,1));
    pan3.add(b1);
    pan3.add(b2);
    pan3.add(b3);
    pan2.add(pan3,BorderLayout.CENTER);
    pan4.setLayout(new BoxLayout(pan4,BoxLayout.LINE_AXIS));
    pan4.add(label8);
    pan5.setLayout(new BoxLayout(pan5,BoxLayout.LINE_AXIS));
    pan5.add(label7);
    pan5.add(heure);
    pan5.add(label5);
    pan5.add(minute);
    pan5.add(label6);
    pan5.add(seconde);
    pan7.setLayout(new BoxLayout(pan7,BoxLayout.LINE_AXIS));
    pan7.add(label10);
    pan7.add(s2);
    pan6.setLayout(new GridLayout(3,1));
    pan6.add(pan4);
    pan6.add(pan5);
    pan6.add(pan7);
    pan2.add(pan6,BorderLayout.SOUTH);
    b1.addActionListener(this); 
    b2.addActionListener(this);
    b3.addActionListener(this);
    this.setContentPane(pan2);
    this.setVisible(true);
    

    
    
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        
        if(e.getSource()==b1){
            s2.setText(""+debiter(Integer.parseInt(s1.getText()),c)+"");
        }
    }

compte'

package banque;

import java.util.Calendar;
import java.util.Scanner;

public class Compte {
    Calendar cal = Calendar.getInstance();
    private static int compteur=0;
    Scanner sc = new Scanner(System.in);
   private int Numero;
   private boolean  etat;
   private int Solde;
   public Compte(int n,boolean e,int s){
       compteur++;
       Numero=n;
       etat=e;
       Solde=s;  
   }  

   public int getNumero(){
       return Numero;
   }
   public boolean getEtat(){
       return etat;
   }
   public int getSolde(){
       return Solde;
   } 
   public void setNumero(int nu)
   {
       Numero=nu;
   }
   public void setEtat(boolean et)
   {
    etat=et;   
   }
   public void setSolde(int so){
       Solde=so;
   }
  public void debiter(int r,Compte c){
    int somme = 0;
    if(r>0)
    somme=c.getSolde();   
    c.setSolde(r-somme);
   }
   public void crediter(int r,Compte c){
    int somme = 0;
    if(r>0)
    somme=c.getSolde();   
    c.setSolde(r+somme);
   }
   public void virement(Compte c1,Compte c2){
    int s;
    System.out.println("taper une somme a virer");
    s=sc.nextInt();
    debiter(s,c1);
    crediter(s,c2);    
   }
   public void afficher(Compte c){
   System.out.println("Numero du compte:"+compteur+"\nDate de creation:"+cal.get(Calendar.HOUR_OF_DAY)+""+cal.get(Calendar.MINUTE)+""+cal.get(Calendar.SECOND)+"");
   }
}

client

package banque;

public class Client extends Compte{
private String Nom;
private String Prenom;
private String Telephone;
private Compte[] c=new Compte[6];

    public Client(int n,boolean e,int s,String no,String pr,String Te,Compte co[]) {
        super(n, e, s);
        Nom=no;
        Prenom=pr;
        Telephone=Te;
        c=co;
    }
    
    
    }

banque

package banque;

import java.util.Scanner;

public class Banque extends Client{
private String nom;
private String adresse;
private String telephone;
private Client[] cl= new Client[6];        
Scanner sc = new Scanner(System.in);

    public Banque(int n, boolean e, int s, String no, String pr, String Te, Compte[] co) {
        super(n, e, s, no, pr, Te, co);
    }


   public String getNom(){
       return nom;
       
    }
   public String getAdresse(){
       return adresse;
   }
   public String getTelephone(){
       return telephone;
   }
   public void setAdresse(String adresse){
       this.adresse=adresse;
   }
   public void setNom(String nom){
       this.nom=nom;
   }
   public void setTelephone(String telephone){
       this.telephone=telephone;
   }
    
    
}