Add row in the middle of Datatable

Hi
my requirement is i've to display a table in following fashion:
Product_catagory   product_name    Price
    cat1              p1          10
                      p2           10
                      p3         20
                       Sub_Total    40
    cat2              p4          15
                      p5            10
                       Sub_Total   25
    cat3               p33          10
                       Sub_Total    10how can i achieve the Sub_total display...
Thanks in advance
Fareen

<h:column>
    <h:outputText value="#{product.name}" />
    <br />
    Subtotal
</h:column>
<h:column>
    <h:outputText value="#{product.price}" />
    <br />
    <h:outputText value="#{bean.subtotal}" />
</h:column>or so.
You can also use a <h:panelGrid column="1"> here, but that renders another table in a table. You can also use plain vanilla HTML with c:forEach here if you're using at least JSF 1.2.

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Hai,
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The code below adds the 2 lines all right but then, a blank line after and the line that was already there below is destroyed. Don't ask me why and what is happening to that existing line which seems to have lost the ItemCode or I don't know what happened
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9 )
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import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class TableRowColumn extends JFrame
     private final static String LETTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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     JPanel buttonPanel;
     JButton button;
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                    model.addRow( createRow() );
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                   sorter.sort(modelColumn);
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          newRow[0] = Integer.toString( row );
          newRow[1] = LETTERS.substring(row-1, row);
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     public static void main(String[] args)
          TableRowColumn frame = new TableRowColumn();
          frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
          frame.pack();
          frame.setVisible(true);
}

I attempted to modify the code in the correct way, but I ran into a problem near the bottom with the model.addRow(rowData); line. It has an error saying it can't find the addRow method. If I take away the model part, it will compile, but it will cause an infinite loop when I push the 'Add Row' button within the program. I didn't expect that to work, and I think it isn't calling the right model.
I am aware that my code organization and design skills are not very good. I am a fan of basic assembly and low-level hardware languages for the most part.
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import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class TableRowColumn extends JFrame
     private final static String LETTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
     JTable table;
     public DefaultTableModel model;
     JPanel buttonPanel;
     JButton button;
     public TableRowColumn()
          Object[][] data = {
                    {"9", "C"},
                    {"5", "A"},
                    {"3", "B"}
          String[] columnNames = {
                "Number",
                "Letter"
          model = new DefaultTableModel(data, columnNames);
                //comment out this SortFilterModel line
                final SortFilterModel sorter = new SortFilterModel(model);
                //Change sorter to model
          table = new JTable(sorter);
          table.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE);
          // Add table and a Button panel to the frame
          JScrollPane scrollPane = new JScrollPane( table );
          getContentPane().add( scrollPane );
          buttonPanel = new JPanel();
          getContentPane().add( buttonPanel, BorderLayout.SOUTH );
          button = new JButton( "Add Row" );
          buttonPanel.add( button );
          button.addActionListener( new ActionListener()
               public void actionPerformed(ActionEvent e)
                    sorter.addRow( createRow() );
                    int row = table.getRowCount() - 1;
                    table.changeSelection(row, row, false, false);
                    table.requestFocusInWindow();
             //Set up double click handler for column headers and sort
             table.getTableHeader().addMouseListener(new MouseAdapter(){
                    public void mouseClicked(MouseEvent event)
                      //check for click
                      if (event.getClickCount() < 2) return;
                   //find column of click and
                   int tableColumn = table.columnAtPoint(event.getPoint());
                   //translate to table model index and sort
                   int modelColumn = table.convertColumnIndexToModel(tableColumn);
                   sorter.sort(modelColumn);
     private Object[] createRow()
          Object[] newRow = new Object[2];
          int row = table.getRowCount() + 1;
          newRow[0] = Integer.toString( row );
          newRow[1] = LETTERS.substring(row-1, row);
          return newRow;
     public static void main(String[] args)
          TableRowColumn frame = new TableRowColumn();
          frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
          frame.pack();
          frame.setVisible(true);
class SortFilterModel extends AbstractTableModel{
    public SortFilterModel(TableModel m){
        model = m;
        rows = new Row[model.getRowCount()];
        for (int i = 0; i < rows.length; i++) {
            rows[i] = new Row();
            rows.index = i;
public void sort(int c){
sortColumn = c;
Arrays.sort(rows);
fireTableDataChanged();
public Object getValueAt(int r, int c) {
return model.getValueAt(rows[r].index, c);
public boolean isCellEditable(int r, int c){
return model.isCellEditable(rows[r].index, c);
public void setValueAt(Object aValue, int r, int c){
model.setValueAt(aValue, rows[r].index, c);
public int getRowCount() {
return model.getRowCount();
public int getColumnCount(){
return model.getColumnCount();
public String getColumnName(int c) {
return model.getColumnName(c);
public Class getColumnClass(int c){
return model.getColumnClass(c);
private class Row implements Comparable {
public int index;
public int compareTo(Object other) {
Row otherRow = (Row)other;
Object a = model.getValueAt(index, sortColumn);
Object b = model.getValueAt(otherRow.index, sortColumn);
if (a instanceof Comparable) {
return ((Comparable)a).compareTo(b);
else{
return a.toString().compareTo(b.toString());
public void addRow(Object[] rowData) {
Row[] oldRows = new Row[rows.length];
for (int i=0; i<rows.length; i++) {
oldRows[i] = rows[i];
rows = new Row[rows.length +1];
for (int i=0; i < oldRows.length; i++) {
rows[i] = oldRows[i];
rows[oldRows.length] = new Row();
rows[oldRows.length].index = oldRows.length;
addRow (rowData);
//model.addRow(rowData);
fireTableDataChanged();
private TableModel model;
private int sortColumn;
private Row[] rows;

How to add an extra row at the end of the Grid?

Hi gurus,
I am getting result from the select query which has 4 columns.
I got the requirement to display the sum of those columns as the last row.
How can i add the another row at the end of the iGrid ?
Data would look like
Sno Col1   Col2 Col3 Col4
1         4       6      1       6
2         5       8      0       8
3         6       1      2       5
Sum     15     14    3       19
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Can i add row to the display tempalate by accessing the Gridobject?
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Vansi
Edited by: vamsi P on Feb 12, 2008 8:49 PM
Edited by: vamsi P on Feb 12, 2008 8:49 PM

Hi Vamsi,
There are a few options ...
1) The one suggested by Prasanna
2) Loop through all rows via JavaScript and use the GridObject methods to set cell values and then perform an applet.refreshGrid( false )
3) Apply an Inline transform
4) Use a stored procedure to return the results and the totals as one recordset.
The stored procedure would be the fastest for runtime.
The Iniline XSL transform would be the second fastest. If you specify the XSL in a generic way, you may even be able to reuse it in other scenarios. If you hardcode the fields in the XSL, it would be a matter of simple code adjustment when you encounter a similar scenario.
Hope this helps.
Cheers,
Jai.

Add row in the middle of Datatable

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