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Export isi JTable ke file CSV

Mari berdiskusi bersama kami di Group Facebook Kurung Kurawal

JtableToCSV

Tutorial berikut bertujuan untuk meng-export isi dari JTable (dari Swing) menjadi file CSV. Tutorial ini saya buat berdasarkan pertanyaan di salah group pemrograman di Facebook.

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/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package tutorials;
 
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.table.DefaultTableModel;
 
/**
 *
 * @author konglie
 */
public class JTableToCSV extends JFrame {
    public JTableToCSV(){
        super("JTable to CSV");
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setMinimumSize(new Dimension(800, 600));
        initComponents();
        pack();
        this.setLocationRelativeTo(null);
        setVisible(true);
        genRandomData();
    }
 
    private JPanel toolbar;
    private JButton btnRandomData, btnToCSV;
    private JTable table;
    private void initComponents(){
        toolbar = new JPanel(new FlowLayout());
        toolbar.add(new JLabel("Operasi"));
 
        btnRandomData = new JButton("Generate Random Data");
        btnRandomData.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                genRandomData();
            }
        });
        toolbar.add(btnRandomData);
 
        btnToCSV = new JButton("Export to CSV");
        btnToCSV.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JTableToCSV.saveCSV(table);
            }
        });
        toolbar.add(btnToCSV);
 
        getContentPane().add(toolbar, BorderLayout.NORTH);
 
        String[] cols = "Kolom 1, Kolom 2, Kolom 3, Kolom 4, Kolom 5".split(", ");
        DefaultTableModel tm = new DefaultTableModel(null, cols);
        table = new JTable(tm);
        table.setAutoCreateRowSorter(false);
 
        JScrollPane pane = new JScrollPane(table);
        getContentPane().add(pane, BorderLayout.CENTER);
 
        JLabel about = new JLabel("<html><center>&copy; ali LIM<br/>http://kurungkurawal.com</center></html>");
        about.setHorizontalAlignment(SwingConstants.CENTER);
        about.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
        getContentPane().add(about, BorderLayout.SOUTH);
    }
 
    private void genRandomData(){
        DefaultTableModel tm = (DefaultTableModel) table.getModel();
        tm.setRowCount(0);
        int n = random(50,100);
        for(int i = 0; i < n; i++){
            tm.addRow(new Object[]{
                String.format("Data ke %s", i),
                String.format("Col %s - %s, %s", i, 2, random(10, 99)),
                String.format("Col %s - %s, %s", i, 3, random(10, 99)),
                String.format("Col %s - %s, %s", i, 4, random(10, 99)),
                String.format("Col %s - %s, %s", i, 5, random(10, 99))
            });
        }
    }
 
    public static void saveCSV(JTable table){
        DefaultTableModel model = (DefaultTableModel) table.getModel();
 
        JFileChooser chooser = new JFileChooser();
        int state = chooser.showSaveDialog(null);
        File file = chooser.getSelectedFile();
        if (file != null && state == JFileChooser.APPROVE_OPTION) {
            try {
                BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(file, true));
                PrintWriter fileWriter = new PrintWriter(bufferedWriter);
                for (int i = 0; i < model.getRowCount(); i++) {
                    for (int j = 0; j < model.getColumnCount(); j++) {
                        Object o = model.getValueAt(i, j);
                        String s = (o == null ? "" : String.format("\"%s\"", o.toString()));
                        System.out.print(s);
                        bufferedWriter.write(s);
 
                        if(j < model.getColumnCount() - 1 ){
                            bufferedWriter.write(",");
                        } else {
                            bufferedWriter.write("\r\n");
                        }
                    }
                }
 
                fileWriter.close();
                JOptionPane.showMessageDialog(null, "Success");
            } catch (Exception e) {
                JOptionPane.showMessageDialog(null, "Failure");
            }
        }
    }
 
    public static int random(int min, int max){
        return (int)( Math.random() * max + min);
    }
}

Method saveCSV() yang digunakan disini adalah modifikasi dari method yang ditanyakan di group facebook tersebut.

Download file jar demo nya disini.