برنامج فاتورة

   بدي مستعمل يدخل معلومات و بعدين برنامج يضرب قيمة منتج في عدد منتج ثم يضعها في motantبعدين يجمع motant و يضعا في total

package hada;
import javax.swing.*;
import javax.swing.table.TableColumnModel;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
public class Test extends JFrame {  
    JLabel l,l1;JTable t,t1;Panel Tpanel;JButton b;
    Test(){  
        l=new JLabel("Entreprise National des piéces/ 15 zone Rouiba/ Algérie",JLabel.LEFT);
        l1=new JLabel("Facture",JLabel.RIGHT);
        l.setFont(new Font("Ahmed",Font.PLAIN,20));
        l1.setFont(new Font("Ahmed",Font.BOLD,30));
        l.setVerticalAlignment(JLabel.TOP);
        l1.setVerticalAlignment(JLabel.CENTER);
        String titles[]= {"Référence","Produit","Quantité","Prix","Montant"};
        String titles1[]= {"",""};
        Object[][] data,data1;
        data = new Object[3][5];
        data1 = new Object[4][2];
        Date d=new Date();
        data1[0][0]="Némuro";data1[1][0]="Date";data1[2][0]="Nom Client";data1[1][1]=d;data1[3][0]="Prénom Client";
        data[2][1]="Total";
        t= new JTable(data,titles);
        t1= new JTable(data1,titles1);
        JScrollPane sp=new JScrollPane(t);
        sp.getViewport().setViewPosition(new Point(0,0));
        t.setRowHeight(25);
        TableColumnModel columnModel = t1.getColumnModel();
        columnModel.getColumn(1).setPreferredWidth(200);
        columnModel.getColumn(1).setMaxWidth(200);
        columnModel.getColumn(0).setPreferredWidth(120);
        columnModel.getColumn(0).setMaxWidth(120);

        JScrollPane sp1=new JScrollPane(t1);
        sp1.getViewport().setViewPosition(new Point(0,0));
        b=new JButton("save");
        b.addActionListener((ActionListener) new ActionListener() {

		@Override
		public void actionPerformed(ActionEvent e) {
    		FileWriter fileWriter = null;
			try {
				fileWriter = new FileWriter("ContactList.txt", true);
			} catch (IOException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
    		PrintWriter outputFile = new PrintWriter(fileWriter);
    		outputFile.println(Tpanel);
    		outputFile.close();
			
		}
            });
	      
        Tpanel = new Panel();
        Tpanel.add(l);
        Tpanel.add(l1);
        Tpanel.add(sp1);
        Tpanel.add(sp);
        Tpanel.add(b);
        Tpanel.setLayout(new BoxLayout(Tpanel, BoxLayout.PAGE_AXIS));
        add(Tpanel);
        setTitle("Facture_ta3_jami3a");
        setSize(700,700);    
        setVisible(true);  
    }  
   


	public static void main(String[] args) {  
        new Test();  
    } }