Update database from Jtable

Question

Hi all,
I am trying to update database from Jtable. I added Jtable to scrollpane .
My question is..
after updating the Jtable..I want to save the details to database..when I click save button on my screen...how to do that? Please help me out! Thanks in advance..
Here is the code that I wrote...
public class VasuTest extends JFrame {
private boolean DEBUG = true;
Vector column_list = new Vector();
Vector rows = new Vector();
public VasuTest() {
super("VasuTest");
     JToolBar toolBar = new JToolBar();
JButton button = null;
button = new JButton("Send Email");
button.setToolTipText("This is the Exit button");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
     System.out.println("Send Email");
toolBar.add(button);
button = new JButton("Save");
button.setToolTipText("This is the Save button");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
     System.out.println("Save");
toolBar.add(button);
button = new JButton("Exit");
button.setToolTipText("This is the Exit button");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
     System.exit(0);
toolBar.add(button);
     JPanel ContentPane = new JPanel();
ImageIcon i1 = new ImageIcon("Dongle.gif");
JLabel j1 = new JLabel( i1, JLabel.CENTER);
     ContentPane.add(j1,BorderLayout.CENTER);
     setContentPane(ContentPane);
     JDBCT myModel = new JDBCT();
String q = "select a.email_no,a.email_ln_no,b.cust_no,null customer_name,null cdate,a.batch_no,b.purch_ord_no,a.user_part_no,null part_desc,a.user_upgraded_part_no,null prod_id,a.qty,a.price,a.encrypted_sum_id,a.decrypted_sum_id,a.approval_key,a.status_cd,decode(a.status_cd,'APPROVED','true','ERROR','false','PROCESSED','true') approved,null end_cust,null sales_ord,null so_line,null sales_ord_cust,null shipment ,null sales_end_cust_name ,null shipment_line,a.note,null fromcust from upgrade_req_key_s3 a,upgrade_req_s3 b where a.email_no = b.email_no order by a.email_no,a.email_ln_no";
myModel.setQuery();
final Font f = new Font("SansSerif", Font.BOLD, 10);
JTable table = new JTable(myModel);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
// Container ContentPane = getContentPane();
     int v = ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS;
     int h = ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS;
     JScrollPane scrollPane = new JScrollPane(table,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
     scrollPane.setPreferredSize ( new Dimension ( 770, 400 ) );
ContentPane.add(toolBar,BorderLayout.CENTER);
//Add the scroll pane to this window.
ContentPane.add(scrollPane,BorderLayout.CENTER);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
public class JDBCT extends AbstractTableModel {
Vector cache; // will hold String[] objects...
int colCount;
int rowHeight;
String [] headers;
Connection db;
Connection conn;
Statement statement;
String currentURL;
// public QueryTableModel() {
// cache = new Vector();
// new oracle.jdbc.driver.OracleDriver();
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
catch (ClassNotFoundException e) {
System.out.println(e.getMessage());
System.exit(-1);
String url = "jdbc:odbc:c3-erp,s3,s3";
public String getColumnName(int i) {
     if (i == 0)      {  return      "Email No"                     ;     } else
if (i == 1)      {  return      "Email Line No.";} else
     if (i == 2)      {  return      "Customer";} else
     if (i == 3)      {  return      "Customer Name";} else
     if (i == 4)      {  return      "Date";} else
     if (i == 5)      {  return      "Batch No";} else
     if (i == 6)      {  return      "Customer PO";} else
     if (i == 7)      {  return      "Upgrade From Part";} else
     if (i == 8)      {  return      "Part Description";} else
     if (i == 9)      {  return      "Upgrade To Part";} else
     if (i == 10)      {  return      "Product Id";} else
     if (i == 11)      {  return      "Quantity";} else
     if (i == 12)      {  return      "Price";} else
     if (i == 13)      {  return      "Encypted Sum ID";} else
     if (i == 14)      {  return      "Decrypted Serial No";} else
     if (i == 15)      {  return      "Key";} else
     if (i == 16)      {  return      "Status";} else
     if (i == 17)      {  return      "Approved";} else
     if (i == 18)      {  return      "End Customer";} else
     if (i == 19)      {  return      "Sales Order";} else
     if (i == 20)      {  return      "SO Line";} else
     if (i == 21)      {  return      "Sales Order End Customer";} else
     if (i == 22)      {  return      "Sales Order End Customer Name";} else
     if (i == 23)      {  return      "Shipment";} else
     if (i == 24)      {  return      "Shipment Line";} else
     if (i == 25)      {  return      "Errors";} else
     if (i == 26)      { return       "From"; }
     else {return headers[i-1] ;}
public int getColumnCount() { return colCount; }
public int getRowCount() { return cache.size(); }
//public Class getColumnClass(int c) {
// return getValueAt(0, c).getClass();
// overloaded isCellEditable method so that it returns true
// in reference to a cell being editable.
public boolean isCellEditable(int row, int col) { return true; }
// overloaded setValyeAt which updates the data Vector and
// calls the fireTableRowsUpdated() to notify any listeners
// that data has changed and they need to redraw.
public void setValueAt(Object value, int row, int col) {
((String[])cache.elementAt(row))[col] = (String)value;     
     fireTableRowsUpdated(row,row);     
public void getInfo () {
System.out.println("Row Count is : " + cache.size());
     System.out.println("Value at 0,0 is : " + getValueAt(0,0));
//     boolean res = isCellEditable(0,0);
//     System.out.println("The value of the Boolean result is : " + res);
public Object getValueAt(int row, int col) {
return ((String[])cache.elementAt(row))[col];
// All the real work happens here!
// In a real application, we'd probably perform the query in a separate thread.
public void setQuery() {
cache = new Vector();
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
conn = DriverManager.getConnection ("jdbc:odbc:c3-erp","s3","s3");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("select a.email_no,a.email_ln_no,b.cust_no,null customer_name,null cdate,a.batch_no,b.purch_ord_no,a.user_part_no,null part_desc,a.user_upgraded_part_no,null prod_id,a.qty,a.price,a.encrypted_sum_id,a.decrypted_sum_id,a.approval_key,a.status_cd,decode(a.status_cd,'APPROVED','true','ERROR','false','PROCESSED','true') approved,null end_cust,null sales_ord,null so_line,null sales_ord_cust,null shipment ,null sales_end_cust_name ,null shipment_line,a.note,null fromcust from upgrade_req_key_s3 a,upgrade_req_s3 b where a.email_no = b.email_no order by a.email_no,a.email_ln_no");
ResultSetMetaData meta = rs.getMetaData();
colCount = meta.getColumnCount();
String[] record = new String[27];      
// Now we must rebuild the headers array with the new column name
headers = new String[27];
for (int h=0; h < 27; h++) {
// headers[h-1] = meta.getColumnName(h);
     headers[h] = getColumnName(h);
// and file the cache with the record from our query. This would
// be practical if we were expecting a few million records to our
// response query, but we are not so we can do this.
while(rs.next()) {
     for (int i=0; i < colCount; i++) {
     record[i] = rs.getString(i + 1);
     cache.addElement(record);
     // Get the FIRST column of the table tableView
// TableColumn column0 = table.getColumn(cache.elementAt(0));
// Set the cell editor as non editable.
// column0.setCellEditor(new EditableCellEditor(new JComboBox(), true));
fireTableChanged(null); // notify everyone the we had a new table.
catch (Exception e) {
cache = new Vector(); // blank it out and keep going.
     e.printStackTrace();
public static void main(String[] args) {
VasuTest frame = new VasuTest();
frame.pack();
frame.setVisible(true);
}

Answer 1

When you click on the save button, you need to go through the model and retrieve the values getValueAt().
Convert to whatever type you want since getValueAt() returns type Object and update the DB.