Where are my columnheader in JTable with model?

Question

I have drawn a JTable in a form with JBuilder and use the following code. The table is fiiled properly but I don't see the columnheaders.
How can i make them visible?
DefaultTableModel model = new DefaultTableModel();
model.addColumn("Bezoeker_id");
model.addColumn("Voorletters");
model.addColumn("Tussenvoegsel");
model.addColumn("Achternaam");
model.addColumn("Adres");
model.addColumn("Postcode");
model.addColumn("Woonplaats");
model.addColumn("Telefoonnummer");
DataInputStream dis = null;
String record = null;
int recCount = 0;
try
FileInputStream fis = new FileInputStream("C:\\BEZOEKER.dat");
BufferedInputStream bis = new BufferedInputStream(fis);
dis = new DataInputStream(bis);
while ( (record=dis.readLine()) != null )
if (recCount > 0)
String[] items = record.split("\t");
model.addRow(items);
recCount++;
catch (IOException ie)
finally
// if the file opened okay, make sure we close it
if (dis != null)
try
dis.close();
catch (IOException ioe)
jTable1.setModel(model);
[b/]

Answer 1

Here is the whole class. The JTabvle is inside a scrollpane but the columnheader still aren't visible. Any idea?
package thuiszorg;
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.*;
import javax.swing.JTable;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.util.ArrayList;
import javax.swing.table.DefaultTableModel;
import javax.swing.JScrollPane;
import javax.swing.JPanel;
import javax.swing.table.*;
import javax.swing.JScrollBar;
import javax.swing.JPanel;
* <p>Title: Thuiszorg</p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2007</p>
* <p>Company: Avans</p>
* @author DT2-I4-Groep2
* @version 1.0
public class FrameMain extends JFrame {
    public FrameMain() {
        try {
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
    private void jbInit() throws Exception {
        getContentPane().setLayout(null);
        this.setJMenuBar(null);
        this.setResizable(false);
        this.setState(Frame.ICONIFIED);
        this.setTitle("Test");
        jButton2.setBounds(new Rectangle(20, 120, 120, 23));
        jButton2.setText("Hulpmiddelen");
        jButton1.setBounds(new Rectangle(19, 218, 120, 23));
        jButton1.setText("Facturen");
        jButton4.setBounds(new Rectangle(18, 186, 120, 23));
        jButton4.setText("Verhuren");
        jButton3.setBounds(new Rectangle(20, 154, 120, 23));
        jButton3.setText("Hulpmiddelsoorten");
        cmdBezoekers.addActionListener(new FrameMain_cmdBezoekers_actionAdapter(this));
        jTable1.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        scrollPane1.setBounds(new Rectangle(181, 86, 590, 358));
        this.getContentPane().add(cmdBezoekers);
        this.getContentPane().add(jButton2);
        this.getContentPane().add(jButton3);
        this.getContentPane().add(jButton4);
        this.getContentPane().add(jButton1);
        this.getContentPane().add(scrollPane1);
        scrollPane1.add(jTable1);
        cmdBezoekers.setBounds(new Rectangle(18, 85, 120, 23));
        cmdBezoekers.setText("Bezoekers");
    public static void main(String[] args) {
        FrameMain framemain = new FrameMain();
        framemain.setSize(800, 600);
        framemain.show();
    JButton jButton2 = new JButton();
    JButton cmdBezoekers = new JButton();
    JButton jButton3 = new JButton();
    JButton jButton4 = new JButton();
    JButton jButton1 = new JButton();
    JTable jTable1 = new JTable();
    ScrollPane scrollPane1 = new ScrollPane();
    public void cmdBezoekers_actionPerformed(ActionEvent e) {
        ArrayList arr = new ArrayList();
        ArrayList arrItem = new ArrayList();
        //DefaultTableModel model = new DefaultTableModel();
        DefaultTableModel model = new DefaultTableModel()
            public boolean isCellEditable(int row, int column) {
                return false ;
        model.addColumn("Bezoeker_id");
        model.addColumn("Voorletters");
        model.addColumn("Tussenvoegsel");
        model.addColumn("Achternaam");
        model.addColumn("Adres");
        model.addColumn("Postcode");
        model.addColumn("Woonplaats");
        model.addColumn("Telefoonnummer");
        DefaultTableModel f = (DefaultTableModel)jTable1.getModel();
                        f.addColumn("YourName1");
                        f.addColumn("YourName2");
                        f.addColumn("YourName3");
        int listCount = 0;
        DataInputStream dis = null;
        String record = null;
        int recCount = 0;
        try {
            FileInputStream fis = new FileInputStream("C:\\BEZOEKER.dat");
            BufferedInputStream bis = new BufferedInputStream(fis);
            dis = new DataInputStream(bis);
            while ((record = dis.readLine()) != null) {
                if (recCount > 0) {
                    Bezoeker persoon = new Bezoeker();
                    String[] items = record.split("\t");
                    // persoon.SetBezoekerId((int)items[0]);
                    persoon.SetVoorletters(items[1]);
                    persoon.SetTussenvoegsel(items[2]);
                    persoon.SetAchternaam(items[3]);
                    persoon.SetAdres(items[4]);
                    persoon.SetPostcode(items[5]);
                    persoon.SetWoonplaats(items[6]);
                    persoon.SetTelefoonNummer(items[7]);
                    model.addRow(items);
                recCount++;
        } catch (IOException ie) {
        } finally {
            // if the file opened okay, make sure we close it
            if (dis != null) {
                try {
                    dis.close();
                } catch (IOException ioe) {
       jTable1.setModel(model);
        //JScrollPane myScrollPane = new JScrollPane(jTable1);;
        this.getContentPane().add(scrollPane1);
class FrameMain_cmdBezoekers_actionAdapter implements ActionListener {
    private FrameMain adaptee;
    FrameMain_cmdBezoekers_actionAdapter(FrameMain adaptee) {
        this.adaptee = adaptee;
    public void actionPerformed(ActionEvent e) {
        adaptee.cmdBezoekers_actionPerformed(e);
}