Jtable Update problem .. Please help !!!!!!!!

Question

Hi ,
I am trying to get my updated Jtable, stored in a table of database over a previous table ......after updating it via drag n drop ....
But even after I change the cell position to make the changes ... it still takes up the old value of that cell and not the new one while writing the data in the database table...
Here is the code .... Please see it and tell me if it is possible :
package newpackage;
import java.sql.*;
import java.util.Vector;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.Dimension;
import java.text.*;
import newpackage.ExcelExporter;
import java.awt.Dimension;
import javax.swing.border.*;
import javax.swing.table.*;
import java.awt.datatransfer.*;
import java.awt.dnd.*;
import java.awt.image.*;
import java.io.*;
import java.util.*;
import java.awt.print.*;
import java.awt.*;
import java.io.*;
import java.util.Random.*;
import javax.swing.*;
import java.text.*;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableColumn;
public class tab7le extends javax.swing.JFrame {
    Vector columnNames = new Vector();
    Vector data = new Vector();
    Connection con;
Statement stat;
ResultSet rs;
int li_cols = 0;
Vector allRows;
Vector row;
Vector newRow;
Vector colNames;
String dbColNames[];
String pkValues[];
String tableName;
ResultSetMetaData myM;
String pKeyCol;
Vector deletedKeys;
Vector newRows;
boolean ibRowNew = false;
boolean ibRowInserted = false;
    private Map<String, Color> colormap = new HashMap<String, Color>();
    /** Creates new form tab7le */
    public tab7le() {
        populate();
        initComponents();
       public void updateDB(){
                 try{
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
      catch (ClassNotFoundException e){
            System.out.println("Cannot Load Driver!");
      try{
         String url = "jdbc:odbc:FAMS";
         con = DriverManager.getConnection(url);
         stat = con.createStatement();
         rs = stat.executeQuery("Select * from SubAllot");
         deletedKeys = new Vector();
         newRows = new Vector();
         myM = rs.getMetaData();
         tableName = myM.getTableName(1);
         li_cols = myM.getColumnCount();
         dbColNames = new String[li_cols];
         for(int col = 0; col < li_cols; col ++){
            dbColNames[col] = myM.getColumnName(col + 1);
         allRows = new Vector();
         while(rs.next()){
            newRow = new Vector();
            for(int i = 1; i <= li_cols; i++){
               newRow.addElement(rs.getObject(i));
            } // for
            allRows.addElement(newRow);
         } // while
      catch(SQLException e){
         System.out.println(e.getMessage());
String updateLine[] = new String[dbColNames.length];
      try{
         DatabaseMetaData dbData = con.getMetaData();
         String catalog;
         // Get the name of all of the columns for this table
         String curCol;
         colNames = new Vector();
         ResultSet rset1 = dbData.getColumns(null,null,tableName,null);
         while (rset1.next()) {
            curCol = rset1.getString(4);
            colNames.addElement(curCol);
         rset1.close();
         pKeyCol = colNames.firstElement().toString();
         // Go through the rows and perform INSERTS/UPDATES/DELETES
         int totalrows;
         totalrows = allRows.size();
         String dbValues[];
         Vector currentRow = new Vector();
         pkValues = new String[allRows.size()];
         // Get column names and values
         for(int i=0;i < totalrows;i++){
            currentRow = (Vector) allRows.elementAt(i);
            int numElements = currentRow.size();
            dbValues = new String[numElements];
            for(int x = 0; x < numElements; x++){
               String classType = currentRow.elementAt(x).getClass().toString();
               int pos = classType.indexOf("String");
               if(pos > 0){ // we have a String
                  dbValues[x] = "'" + currentRow.elementAt(x) + "'";
                  updateLine[x] = dbColNames[x] + " = " + "'" + currentRow.elementAt(x) + "',";
                  if (dbColNames[x].toUpperCase().equals(pKeyCol.toUpperCase())){
                    pkValues[i] = currentRow.elementAt(x).toString() ;
               pos = classType.indexOf("Integer");
               if(pos > 0){ // we have an Integer
                  dbValues[x] = currentRow.elementAt(x).toString();
                  if (dbColNames[x].toUpperCase().equals(pKeyCol.toUpperCase())){
                     pkValues[i] = currentRow.elementAt(x).toString();
                  else{
                     updateLine[x] = dbColNames[x] + " = " + currentRow.elementAt(x).toString() + ",";
               pos = classType.indexOf("Boolean");
               if(pos > 0){ // we have a Boolean
                  dbValues[x] = currentRow.elementAt(x).toString();
                  updateLine[x] = dbColNames[x] + " = " + currentRow.elementAt(x).toString() + ",";
                  if (dbColNames[x].toUpperCase().equals(pKeyCol.toUpperCase())){
                     pkValues[i] = currentRow.elementAt(x).toString() ;
            } // For Loop
            // If we are here, we have read one entire row of data. Do an UPDATE or an INSERT
            int numNewRows = newRows.size();
            int insertRow = 0;
            boolean newRowFound;
            for (int z = 0;z < numNewRows;z++){
               insertRow = ((Integer) newRows.get(z)).intValue();
               if(insertRow == i+1){
                  StringBuffer InsertSQL = new StringBuffer();
                  InsertSQL.append("INSERT INTO " + tableName + " (");
                  for(int zz=0;zz<=dbColNames.length-1;zz++){
                     if (dbColNames[zz] != null){
                        InsertSQL.append(dbColNames[zz] + ",");
                  // Strip out last comma
                  InsertSQL.replace(InsertSQL.length()-1,InsertSQL.length(),")");
                  InsertSQL.append(" VALUES(" + pkValues[i] + ",");
                  for(int c=1;c < dbValues.length;c++){
                     InsertSQL.append(dbValues[c] + ",");
                  InsertSQL.replace(InsertSQL.length()-1,InsertSQL.length(),")");
                  System.out.println(InsertSQL.toString());
                  stat.executeUpdate(InsertSQL.toString());
                  ibRowInserted=true;
            } // End of INSERT Logic
            // If row has not been INSERTED perform an UPDATE
            if(ibRowInserted == false){
               StringBuffer updateSQL = new StringBuffer();
               updateSQL.append("UPDATE " + tableName + " SET ");
               for(int z=0;z<=updateLine.length-1;z++){
                  if (updateLine[z] != null){
                     updateSQL.append(updateLine[z]);
               // Replace the last ',' in the SQL statement with a blank. Then add WHERE clause
               updateSQL.replace(updateSQL.length()-1,updateSQL.length()," ");
               updateSQL.append(" WHERE " + pKeyCol + " = " + pkValues[i] );
               System.out.println(updateSQL.toString());
               stat.executeUpdate(updateSQL.toString());
               } //for
         catch(Exception ex){
            System.out.println("SQL Error! Cannot perform SQL UPDATE " + ex.getMessage());
         // Delete records from the DB
         try{
            int numDeletes = deletedKeys.size();
            String deleteSQL;
            for(int i = 0; i < numDeletes;i++){
               deleteSQL = "DELETE FROM " + tableName + " WHERE " + pKeyCol + " = " +
                                            ((Integer) deletedKeys.get(i)).toString();
            System.out.println(deleteSQL);
               stat.executeUpdate(deleteSQL);
            // Assume deletes where successful. Recreate Vector holding PK Keys
            deletedKeys = new Vector();
         catch(Exception ex){
            System.out.println(ex.getMessage());
    public void populate()
        try
            //  Connect to the Database
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            Connection con = DriverManager.getConnection("Jdbc:Odbc:FAMS"," "," ");
            System.out.println("ok1");
            //  Read data from a table
            String sql;
             sql = "Select * from SubAllot";
             System.out.println("ok1");
            Statement stmt = con.createStatement();
            System.out.println("ok1");
            ResultSet rs = stmt.executeQuery( sql );
            System.out.println("ok1");
            ResultSetMetaData md = rs.getMetaData();
            System.out.println("ok1");
            int columns = md.getColumnCount();
            for(int i = 0;i<columns;i++){
                columnNames.addElement(md.getColumnName(i+1));
                System.out.println("ok2");
            while (rs.next())
                Vector row = new Vector(columns);
                for (int i = 1; i <columns+1; i++)
                    row.addElement( rs.getObject(i) );
                data.addElement( row );
        catch(Exception e){
            e.printStackTrace();
             public void dropmenu(JTable table,TableColumn subpref1) {
        //Set up the editor for the sport cells.
        JComboBox comboBox = new JComboBox();
      for (int i = 0;i<=20;i++)
       comboBox.addItem(i);
        subpref1.setCellEditor(new DefaultCellEditor(comboBox));
        //Set up tool tips for the sport cells.
        DefaultTableCellRenderer renderer =
                new DefaultTableCellRenderer();
        renderer.setToolTipText("Click for combo box");
        subpref1.setCellRenderer(renderer);
                   abstract class StringTransferHandler extends TransferHandler {
        public int dropAction;
        protected abstract String exportString(final JComponent c);
        protected abstract void importString(final JComponent c, final String str);
        @Override
        protected Transferable createTransferable(final JComponent c) {
            return new StringSelection(exportString(c));
        @Override
        public int getSourceActions(final JComponent c) {
            return MOVE;
        @Override
        public boolean importData(final JComponent c, final Transferable t) {
            if (canImport(c, t.getTransferDataFlavors())) {
                try {
                    String str = (String) t.getTransferData(DataFlavor.stringFlavor);
                    importString(c, str);
                    return true;
                } catch (UnsupportedFlavorException ufe) {
                } catch (IOException ioe) {
            return false;
        @Override
        public boolean canImport(final JComponent c, final DataFlavor[] flavors) {
            for (int ndx = 0; ndx < flavors.length; ndx++) {
                if (DataFlavor.stringFlavor.equals(flavors[ndx])) {
                    return true;
            return false;
    class TableTransferHandler extends StringTransferHandler {
        private int dragRow;
        private int[] dragColumns;
        private BufferedImage[] image;
        private int row;
        private int[] columns;
        public JTable target;
        private Map<String, Color> colormap;
        private TableTransferHandler(final Map<String, Color> colormap) {
            this.colormap = colormap;
        @Override
        protected Transferable createTransferable(final JComponent c) {
            JTable table = (JTable) c;
            dragRow = table.getSelectedRow();
            dragColumns = table.getSelectedColumns();
            createDragImage(table);
            return new StringSelection(exportString(c));
        protected String exportString(final JComponent c) {
            JTable table = (JTable) c;
            row = table.getSelectedRow();
            columns = table.getSelectedColumns();
            StringBuffer buff = new StringBuffer();
            colormap.clear();
            for (int j = 0; j < columns.length; j++) {
                Object val = table.getValueAt(row, columns[j]);
                buff.append(val == null ? "" : val.toString());
                if (j != columns.length - 1) {
                    buff.append(",");
                colormap.put(row+","+columns[j], Color.LIGHT_GRAY);
            table.repaint();
            return buff.toString();
        protected void importString(final JComponent c, final String str) {
            target = (JTable) c;
            DefaultTableModel model = (DefaultTableModel) target.getModel();
            String[] values = str.split("\n");
            int colCount = target.getSelectedColumn();
            int max = target.getColumnCount();
            for (int ndx = 0; ndx < values.length; ndx++) {
                String[] data = values[ndx].split(",");
                for (int i = 0; i < data.length; i++) {
                    String string = data;
if(colCount < max){
Object val = model.getValueAt(target.getSelectedRow(), colCount);
model.setValueAt(string, target.getSelectedRow(), colCount);
model.setValueAt(val, dragRow, dragColumns[i]);
colCount++;
public BufferedImage[] getDragImage() {
return image;
private void createDragImage(final JTable table) {
if (dragColumns != null) {
try {
image = new BufferedImage[dragColumns.length];
for (int i = 0; i < dragColumns.length; i++) {
Rectangle cellBounds = table.getCellRect(dragRow, i, true);
TableCellRenderer r = table.getCellRenderer(dragRow, i);
DefaultTableModel m = (DefaultTableModel) table.getModel();
JComponent lbl = (JComponent) r.getTableCellRendererComponent(table,
table.getValueAt(dragRow, dragColumns[i]), false, false, dragRow, i);
lbl.setBounds(cellBounds);
BufferedImage img = new BufferedImage(lbl.getWidth(), lbl.getHeight(),
BufferedImage.TYPE_INT_ARGB_PRE);
Graphics2D graphics = img.createGraphics();
graphics.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.6f));
lbl.setBorder(BorderFactory.createLineBorder(Color.LIGHT_GRAY));
lbl.paint(graphics);
graphics.dispose();
image[i] = img;
} catch (RuntimeException re) {
class TableDropTarget extends DropTarget {
private Insets autoscrollInsets = new Insets(20, 20, 20, 20);
private Rectangle rect2D = new Rectangle();
private TableTransferHandler handler;
public TableDropTarget(final TableTransferHandler h) {
super();
this.handler = h;
@Override
public void dragOver(final DropTargetDragEvent dtde) {
handler.dropAction = dtde.getDropAction();
JTable table = (JTable) dtde.getDropTargetContext().getComponent();
Point location = dtde.getLocation();
int row = table.rowAtPoint(location);
int column = table.columnAtPoint(location);
table.changeSelection(row, column, false, false);
paintImage(table, location);
autoscroll(table, location);
super.dragOver(dtde);
public void dragExit(final DropTargetDragEvent dtde) {
clearImage((JTable) dtde.getDropTargetContext().getComponent());
super.dragExit(dtde);
@Override
public void drop(final DropTargetDropEvent dtde) {
Transferable data = dtde.getTransferable();
JTable table = (JTable) dtde.getDropTargetContext().getComponent();
clearImage(table);
handler.importData(table, data);
super.drop(dtde);
private final void paintImage(final JTable table, final Point location) {
Point pt = new Point(location);
BufferedImage[] image = handler.getDragImage();
if (image != null) {
table.paintImmediately(rect2D.getBounds());
rect2D.setLocation(pt.x - 15, pt.y - 15);
int wRect2D = 0;
int hRect2D = 0;
for (int i = 0; i < image.length; i++) {
table.getGraphics().drawImage(image[i], pt.x - 15, pt.y - 15, table);
pt.x += image[i].getWidth();
if (hRect2D < image[i].getHeight()) {
hRect2D = image[i].getHeight();
wRect2D += image[i].getWidth();
rect2D.setSize(wRect2D, hRect2D);
private final void clearImage(final JTable table) {
table.paintImmediately(rect2D.getBounds());
private Insets getAutoscrollInsets() {
return autoscrollInsets;
private void autoscroll(final JTable table, final Point cursorLocation) {
Insets insets = getAutoscrollInsets();
Rectangle outer = table.getVisibleRect();
Rectangle inner = new Rectangle(outer.x + insets.left,
outer.y + insets.top,
outer.width - (insets.left + insets.right),
outer.height - (insets.top + insets.bottom));
if (!inner.contains(cursorLocation)) {
Rectangle scrollRect = new Rectangle(cursorLocation.x - insets.left,
cursorLocation.y - insets.top,
insets.left + insets.right,
insets.top + insets.bottom);
table.scrollRectToVisible(scrollRect);
/** 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">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
table = new javax.swing.JTable();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
table.setModel(new javax.swing.table.DefaultTableModel(
data, columnNames
jScrollPane1.setViewportView(table);
//populate();
table.getTableHeader().setReorderingAllowed(false);
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
table.setCellSelectionEnabled(true);
table.setDragEnabled(true);
TableTransferHandler th = new TableTransferHandler(colormap);
table.setTransferHandler(th);
table.setDropTarget(new TableDropTarget(th));
dropmenu(table, table.getColumnModel().getColumn(11));
jButton1.setText("Update");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
jButton2.setText("Ex");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(92, 92, 92)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 605, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(347, 347, 347)
.addComponent(jButton1)
.addGap(115, 115, 115)
.addComponent(jButton2)))
.addContainerGap(73, Short.MAX_VALUE))
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(47, 47, 47)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 354, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(58, 58, 58)
.addComponent(jButton1)
.addContainerGap(83, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton2)
.addGap(65, 65, 65))))
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                        
updateDB(); // TODO add your handling code here:
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                        
try {
String pathToDesktop = System.getProperty("user.home")+File.separator+"Desktop";
pathToDesktop = pathToDesktop + "//Final Allotment.xls";
ExcelExporter exp = new ExcelExporter();
exp.exportTable(table, new File(pathToDesktop));
JOptionPane.showMessageDialog(this,"File exported and saved on desktop!");
catch (IOException ex) {
System.out.println(ex.getMessage());
ex.printStackTrace();
} // TODO add your handling code here:
* @param args the command line arguments
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new tab7le().setVisible(true);
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable table;
// End of variables declaration
Please help !!!!!!!!
Thanks in advance.....                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

Answer 1

Here is the code Do you expect people to read through 400 lines of code to understand what you are doing?
Why post code with access to a database? We can't access the database.
Search the forum for my "Database Information" (without the space) example class which shows you how to refresh a table with new data.
If you need further help then you need to create a [Short, Self Contained, Compilable and Executable, Example Program (SSCCE)|http://homepage1.nifty.com/algafield/sscce.html], that demonstrates the incorrect behaviour.