How to add the JTable results to an Object to save it in a file?

Hi... After i created a SAVE button and allow the user to enter a file name to save the results in the JTable, it didnt work. After the user entered the filename, the file was not created.
What is the type of the file the user should enter? eg. file.txt, file.doc or wat type?
When i use Vector, i added the JTable into the vector and i write the code 'out.writeObject(vector);'. Is this the right way?? Should i use vector or Object?? If i am suppose to use Object, how do i add the things in the JTable to the Object??
Thanks.

thanks... the file is created but the results in the file is not readable... how do i solve this??
I use vector and i added the JTable into the vector and the results have squares and unreadable symbols....
Thanks again....

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    * frmMain.java
    * Created on October 4, 2006, 6:15 AM
    package tds;
    import java.io.*;
    import java.awt.Toolkit;
    import javax.swing.JFrame;
    import javax.imageio.*;
    import javax.swing.JFrame;
    import java.sql.*;
    import javax.swing.table.DefaultTableModel;
    * @author Dexter.Carlit
    public class frmMain extends javax.swing.JFrame {
    private Connection connection = null;
    private DefaultTableModel model;
    /** Creates new form frmMain */
    public frmMain() {
    initComponents();
    /** This method is called from within the constructor to
    * initialize the form.
    * WARNING: Do NOT modify this code. The content of this method is
    * always regenerated by the Form Editor.
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
    jSplitPane = new javax.swing.JSplitPane();
    jScrollPane1 = new javax.swing.JScrollPane();
    jPanel3 = new javax.swing.JPanel();
    jScrollPane2 = new javax.swing.JScrollPane();
    jTree1 = new javax.swing.JTree();
    jTabbedPane1 = new javax.swing.JTabbedPane();
    jPanel1 = new javax.swing.JPanel();
    jPanel4 = new javax.swing.JPanel();
    jLabel1 = new javax.swing.JLabel();
    jLabel2 = new javax.swing.JLabel();
    jTextField1 = new javax.swing.JTextField();
    jTextField2 = new javax.swing.JTextField();
    jLabel3 = new javax.swing.JLabel();
    jTextField3 = new javax.swing.JTextField();
    jLabel4 = new javax.swing.JLabel();
    jTextField4 = new javax.swing.JTextField();
    jPanel5 = new javax.swing.JPanel();
    jScrollPane3 = new javax.swing.JScrollPane();
    jGrid = new javax.swing.JTable();
    jButton1 = new javax.swing.JButton();
    jButton2 = new javax.swing.JButton();
    jProgressBar1 = new javax.swing.JProgressBar();
    jPanel2 = new javax.swing.JPanel();
    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
    setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
    addWindowListener(new java.awt.event.WindowAdapter() {
    public void windowOpened(java.awt.event.WindowEvent evt) {
    formWindowOpened(evt);
    getAccessibleContext().setAccessibleName("frmMain");
    jSplitPane.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
    jSplitPane.setDividerLocation(200);
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    jScrollPane2.setViewportView(jTree1);
    org.jdesktop.layout.GroupLayout jPanel3Layout = new org.jdesktop.layout.GroupLayout(jPanel3);
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    jPanel3Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    .add(jScrollPane2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 410, Short.MAX_VALUE)
    jScrollPane1.setViewportView(jPanel3);
    jSplitPane.setLeftComponent(jScrollPane1);
    jPanel4.setBorder(javax.swing.BorderFactory.createTitledBorder(""));
    jLabel1.setText("First Name:");
    jLabel2.setText("Last Name:");
    jLabel3.setText("Position :");
    jLabel4.setText("Department:");
    jPanel5.setBorder(javax.swing.BorderFactory.createTitledBorder("Search Results"));
    jGrid.setModel(new javax.swing.table.DefaultTableModel(
    new Object [][] {
    new String [] {
    "LName", "FName", "Position", "Department", "Office No", "Local No", "Office Mobile No", "Home No", "MobileNo", "Email Address"
    jGrid.setAutoResizeMode(javax.swing.JTable.AUTO_RESIZE_OFF);
    jGrid.setColumnSelectionAllowed(true);
    jGrid.setName("");
    jGrid.setTableHeader(jGrid.getTableHeader());
    jScrollPane3.setViewportView(jGrid);
    jScrollPane3.getAccessibleContext().setAccessibleName("rset");
    org.jdesktop.layout.GroupLayout jPanel5Layout = new org.jdesktop.layout.GroupLayout(jPanel5);
    jPanel5.setLayout(jPanel5Layout);
    jPanel5Layout.setHorizontalGroup(
    jPanel5Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    .add(jScrollPane3, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 386, Short.MAX_VALUE)
    jPanel5Layout.setVerticalGroup(
    jPanel5Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    .add(jScrollPane3, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 175, Short.MAX_VALUE)
    jButton1.setText("Find");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    jButton1ActionPerformed(evt);
    jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
    public void mouseClicked(java.awt.event.MouseEvent evt) {
    jButton1MouseClicked(evt);
    jButton2.setText("Clear");
    jButton2.addMouseListener(new java.awt.event.MouseAdapter() {
    public void mouseClicked(java.awt.event.MouseEvent evt) {
    jButton2MouseClicked(evt);
    org.jdesktop.layout.GroupLayout jPanel4Layout = new org.jdesktop.layout.GroupLayout(jPanel4);
    jPanel4.setLayout(jPanel4Layout);
    jPanel4Layout.setHorizontalGroup(
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    .add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel4Layout.createSequentialGroup()
    .addContainerGap()
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    .add(org.jdesktop.layout.GroupLayout.LEADING, jPanel5, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    .add(org.jdesktop.layout.GroupLayout.LEADING, jPanel4Layout.createSequentialGroup()
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    jPanel4Layout.setVerticalGroup(
    jPanel4Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    .add(jPanel4Layout.createSequentialGroup()
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    .add(jPanel4Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
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    .add(jTextField2))
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    .add(jLabel3)
    .add(jTextField3)
    .add(jLabel4)
    .add(jTextField4))
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    .add(jPanel4Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
    .add(jButton2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    .add(jButton1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
    .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
    .add(jPanel5, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
    org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
    jPanel1.setLayout(jPanel1Layout);
    jPanel1Layout.setHorizontalGroup(
    jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    .add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel1Layout.createSequentialGroup()
    .addContainerGap()
    .add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
    .add(org.jdesktop.layout.GroupLayout.LEADING, jPanel4, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    .add(org.jdesktop.layout.GroupLayout.LEADING, jProgressBar1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 438, Short.MAX_VALUE))
    .addContainerGap())
    jPanel1Layout.setVerticalGroup(
    jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    .add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel1Layout.createSequentialGroup()
    .addContainerGap()
    .add(jPanel4, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
    .add(jProgressBar1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
    jTabbedPane1.addTab("Search", jPanel1);
    org.jdesktop.layout.GroupLayout jPanel2Layout = new org.jdesktop.layout.GroupLayout(jPanel2);
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    jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    .add(0, 458, Short.MAX_VALUE)
    jPanel2Layout.setVerticalGroup(
    jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    .add(0, 401, Short.MAX_VALUE)
    jTabbedPane1.addTab("Directory", jPanel2);
    jSplitPane.setRightComponent(jTabbedPane1);
    org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
    layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    .add(jSplitPane, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 675, Short.MAX_VALUE)
    layout.setVerticalGroup(
    layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    .add(jSplitPane)
    pack();
    }// </editor-fold>//GEN-END:initComponents
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
    }//GEN-LAST:event_jButton1ActionPerformed
    private void jButton2MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton2MouseClicked
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    {null, null, null, null, null, null, null, null, null, null},
    {null, null, null, null, null, null, null, null, null, null},
    {null, null, null, null, null, null, null, null, null, null},
    {null, null, null, null, null, null, null, null, null, null}
    new String [] {
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