Probleme calculatrice java

Bonjour à tous; :cry::cry::cry::cry::cry::cry::cry:

j'ai commencer à réaliser une calculatrice java et je suis bloqué sur un gros problème.

J'aimerais que lorsque l'utilisateur clique sur égal que cela récupère les chiffre et l'opérateur que l'utilisateur à selectionné. Et je ne sais pas du tout comment faire. Si vous auriez un indice ou un morceau de code se serais cool.

Voici mon code :
Code:
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public class calculatrice extends javax.swing.JFrame  {
 
 
    public calculatrice() {
        initComponents();
    }
 
 
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {
 
        jTextField_Operation = new javax.swing.JTextField();
        Bouton_7 = new javax.swing.JButton();
        Bouton_8 = new javax.swing.JButton();
        Bouton_9 = new javax.swing.JButton();
        Boutton_4 = new javax.swing.JButton();
        Bouton_5 = new javax.swing.JButton();
        Bouton_6 = new javax.swing.JButton();
        Boutton_1 = new javax.swing.JButton();
        Boutton_0 = new javax.swing.JButton();
        Bouton_egal = new javax.swing.JButton();
        bouton_2 = new javax.swing.JButton();
        Bouton_3 = new javax.swing.JButton();
        Bouton_plus = new javax.swing.JButton();
        Bouton_moin = new javax.swing.JButton();
        Bouton_multiplié = new javax.swing.JButton();
        jButton_Division = new javax.swing.JButton();
        jTextField1 = new javax.swing.JTextField();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setName("Form"); // NOI18N
        addHierarchyBoundsListener(new java.awt.event.HierarchyBoundsListener() {
            public void ancestorMoved(java.awt.event.HierarchyEvent evt) {
                formAncestorMoved(evt);
            }
            public void ancestorResized(java.awt.event.HierarchyEvent evt) {
            }
        });
 
        jTextField_Operation.setName("jTextField_Operation"); // NOI18N
 
        org.jdesktop.application.ResourceMap resourceMap = org.jdesktop.application.Application.getInstance().getContext().getResourceMap(calculatrice.class);
        Bouton_7.setText(resourceMap.getString("Bouton_7.text")); // NOI18N
        Bouton_7.setName("Bouton_7"); // NOI18N
        Bouton_7.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Bouton_7MouseClicked(evt);
            }
        });
 
        Bouton_8.setText(resourceMap.getString("Bouton_8.text")); // NOI18N
        Bouton_8.setName("Bouton_8"); // NOI18N
        Bouton_8.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Bouton_8MouseClicked(evt);
            }
        });
 
        Bouton_9.setText(resourceMap.getString("Bouton_9.text")); // NOI18N
        Bouton_9.setName("Bouton_9"); // NOI18N
        Bouton_9.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Bouton_9MouseClicked(evt);
            }
        });
 
        Boutton_4.setText(resourceMap.getString("Boutton_4.text")); // NOI18N
        Boutton_4.setName("Boutton_4"); // NOI18N
        Boutton_4.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Boutton_4MouseClicked(evt);
            }
        });
 
        Bouton_5.setText(resourceMap.getString("Bouton_5.text")); // NOI18N
        Bouton_5.setName("Bouton_5"); // NOI18N
        Bouton_5.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Bouton_5MouseClicked(evt);
            }
        });
 
        Bouton_6.setText(resourceMap.getString("Bouton_6.text")); // NOI18N
        Bouton_6.setName("Bouton_6"); // NOI18N
        Bouton_6.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Bouton_6MouseClicked(evt);
            }
        });
 
        Boutton_1.setText(resourceMap.getString("Boutton_1.text")); // NOI18N
        Boutton_1.setName("Boutton_1"); // NOI18N
        Boutton_1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Boutton_1MouseClicked(evt);
            }
        });
 
        Boutton_0.setText(resourceMap.getString("Boutton_0.text")); // NOI18N
        Boutton_0.setName("Boutton_0"); // NOI18N
        Boutton_0.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Boutton_0MouseClicked(evt);
            }
        });
 
        Bouton_egal.setText(resourceMap.getString("Bouton_egal.text")); // NOI18N
        Bouton_egal.setName("Bouton_egal"); // NOI18N
        Bouton_egal.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                egal(evt);
            }
        });
 
        bouton_2.setText(resourceMap.getString("bouton_2.text")); // NOI18N
        bouton_2.setName("bouton_2"); // NOI18N
        bouton_2.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                bouton_2MouseClicked(evt);
            }
        });
 
        Bouton_3.setText(resourceMap.getString("Bouton_3.text")); // NOI18N
        Bouton_3.setName("Bouton_3"); // NOI18N
        Bouton_3.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Bouton_3MouseClicked(evt);
            }
        });
 
        Bouton_plus.setText(resourceMap.getString("Bouton_plus.text")); // NOI18N
        Bouton_plus.setName("Bouton_plus"); // NOI18N
        Bouton_plus.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Bouton_plusMouseClicked(evt);
            }
        });
 
        Bouton_moin.setText(resourceMap.getString("Bouton_moin.text")); // NOI18N
        Bouton_moin.setName("Bouton_moin"); // NOI18N
        Bouton_moin.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Bouton_moinMouseClicked(evt);
            }
        });
 
        Bouton_multiplié.setText(resourceMap.getString("Bouton_multiplié.text")); // NOI18N
        Bouton_multiplié.setName("Bouton_multiplié"); // NOI18N
        Bouton_multiplié.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Bouton_multipliéMouseClicked(evt);
            }
        });
 
        jButton_Division.setText(resourceMap.getString("jButton_Division.text")); // NOI18N
        jButton_Division.setName("jButton_Division"); // NOI18N
        jButton_Division.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                Divise_Bouton(evt);
            }
        });
 
        jTextField1.setText(resourceMap.getString("jTextField1.text")); // NOI18N
        jTextField1.setName("jTextField1"); // NOI18N
 
        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(18, 18, 18)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
                    .add(Boutton_0, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .add(Boutton_4, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .add(Bouton_7, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 60, Short.MAX_VALUE)
                    .add(Boutton_1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                .add(12, 12, 12)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .add(jTextField_Operation, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 222, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .addContainerGap())
                    .add(layout.createSequentialGroup()
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
                            .add(Bouton_5, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .add(bouton_2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .add(Bouton_8, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 57, Short.MAX_VALUE)
                            .add(org.jdesktop.layout.GroupLayout.TRAILING, Bouton_egal, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(layout.createSequentialGroup()
                                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                                    .add(Bouton_9, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .add(Bouton_6, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 59, Short.MAX_VALUE))
                                .add(86, 86, 86)
                                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                                    .add(Bouton_moin, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 160, Short.MAX_VALUE)
                                    .add(Bouton_plus, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 160, Short.MAX_VALUE)
                                    .add(Bouton_multiplié, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 160, Short.MAX_VALUE)
                                    .add(jButton_Division, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 160, Short.MAX_VALUE)
                                    .add(layout.createSequentialGroup()
                                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                                        .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 160, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)))
                                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED))
                            .add(Bouton_3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 60, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                        .add(19, 19, 19))))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(35, 35, 35)
                .add(jTextField_Operation, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .add(18, 18, 18)
                .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .add(35, 35, 35)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(Bouton_8)
                    .add(Bouton_7)
                    .add(Bouton_plus)
                    .add(Bouton_9))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                            .add(Boutton_4)
                            .add(Bouton_5)
                            .add(Bouton_6))
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                            .add(Boutton_1)
                            .add(bouton_2)
                            .add(Bouton_3))
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                            .add(Boutton_0)
                            .add(Bouton_egal)))
                    .add(layout.createSequentialGroup()
                        .add(Bouton_moin)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(Bouton_multiplié)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jButton_Division)))
                .addContainerGap(64, Short.MAX_VALUE))
        );
 
        pack();
    }// </editor-fold>
//String calcul[];
String a = "";
String b = "";
String c = "";
String d = "";
String e = "";
String f = "";
String g = "";
String h = "";
String i = "";
String j = "";
String k = "";
String l = "";
String m = "";
String o = "";
 
 
 
private void Bouton_7MouseClicked(java.awt.event.MouseEvent evt) {                                      
jTextField_Operation.setText("7");
//calcul[7] = "7";
 g = "7";
 
}                                     
 
private void Bouton_8MouseClicked(java.awt.event.MouseEvent evt) {                                      
jTextField_Operation.setText("8");
//calcul[8] = "8";
a = "8";
}                                     
 
private void Bouton_9MouseClicked(java.awt.event.MouseEvent evt) {                                      
jTextField_Operation.setText("9");
//calcul[9] = "9";
 b = "9";
}                                     
 
private void Boutton_4MouseClicked(java.awt.event.MouseEvent evt) {                                       
jTextField_Operation.setText("4");
//calcul[4] = "4";
c = "4";
}                                      
 
private void Bouton_5MouseClicked(java.awt.event.MouseEvent evt) {                                      
jTextField_Operation.setText("5");
//calcul[5] = "5";                                     
d = "5";
}                                     
 
private void Bouton_6MouseClicked(java.awt.event.MouseEvent evt) {                                      
jTextField_Operation.setText("6");
//calcul[6] = "6";                                     
e = "6";
}                                     
 
private void Boutton_1MouseClicked(java.awt.event.MouseEvent evt) {                                       
jTextField_Operation.setText("1");
//calcul[1] = "1";
f = "1";
}                                      
 
private void Boutton_0MouseClicked(java.awt.event.MouseEvent evt) {                                       
jTextField_Operation.setText("0");
//calcul[0] = "0";                                      
h = "0";
}                                      
 
private void bouton_2MouseClicked(java.awt.event.MouseEvent evt) {                                      
jTextField_Operation.setText("2");
//calcul[2] = "2";
i = "2";
}                                     
 
private void Bouton_3MouseClicked(java.awt.event.MouseEvent evt) {                                      
jTextField_Operation.setText("3");
//calcul[3] = "3";                                     
j = "3";
}                                     
 
private void Bouton_plusMouseClicked(java.awt.event.MouseEvent evt) {                                         
jTextField_Operation.setText("+");
//calcul[10] = "+";                                        
k = "+";
}                                        
 
private void Bouton_moinMouseClicked(java.awt.event.MouseEvent evt) {                                         
jTextField_Operation.setText("-");
//calcul[11] = "-";
l = "-";
}                                        
 
private void Bouton_multipliéMouseClicked(java.awt.event.MouseEvent evt) {                                              
jTextField_Operation.setText("*");
//calcul[12] = "*";                                             
m = "*";
}                                             
 
private void Divise_Bouton(java.awt.event.MouseEvent evt) {                               
jTextField_Operation.setText("/");
 //calcul[13] = "/";
 o = "/";
}                              
 
private void egal(java.awt.event.MouseEvent evt) {                      
//on reupère les données pui on realise l'opération et on affiche le resulatta
   String chaine = a+b+c+d+e+f+g+h+i+j+k+l+m+o;
 
 
int nombre = chaine.length(); 
	//jTextField1.setText(chaine);	
 
                String x = null;
		float  y1 = 0;
                float k1 = 0;
 
 
		// je recupère l'index la postion des opérateur
		int RechercheDelimiteur = chaine.indexOf("+");
		int RechercheDelimiteur1 = chaine.indexOf("-");
		int RechercheDelimiteur2 = chaine.indexOf("*");
		int RechercheDelimiteur3 = chaine.indexOf("/");
 
 
		//si la position est supérieur a zero alors l'opérateur + qui est dans la chaine sinon c un autre
		if (RechercheDelimiteur > 0){
                        String recupère = chaine.substring(0, RechercheDelimiteur);
                       // y1 = Float.parseFloat(recupère);
			String recupère2 = chaine.substring(RechercheDelimiteur+1, nombre); 
			//k1 = Float.parseFloat(recupère2);
			//x1 =y1+ k1;
                        jTextField1.setText(recupère);
 
		}