JTable display update

Question

I created my own Model to sum in last line and column the values of the previous cells. Unfortunately the update is only done for either column or line. Never for both.
E.g.
class myTest extends DefaultTableModel{
public int getColumnCount() {
return 5;
public void setValueAt(Object value, int row, int col) {
Vector rowVector = (Vector) dataVector.elementAt(row);
rowVector.setElementAt(value, col);
rowVector.setElementAt("nothing", 3);
TableModelEvent event = new TableModelEvent(this, row, row, col);
fireTableChanged(event);
rowVector = (Vector) dataVector.elementAt(4);
rowVector.setElementAt("Sum", 2);
TableModelEvent event1 = new TableModelEvent(this, 2, 2, 4);
fireTableChanged(event1);
public class TableTest{
public static void main(String[] args){
JTable table = new JTable(5, 5){        };
JTextField tf = new JTextField();
tf.setBorder(BorderFactory.createEmptyBorder());
table.setDefaultEditor(Object.class, new DefaultCellEditor(tf));
myTest myModel = new myTest();
table.setModel(myModel);
myModel.insertRow(0,new Object[] {"","","","",""});
myModel.insertRow(0,new Object[] {"","","","",""});
myModel.insertRow(0,new Object[] {"","","","",""});
myModel.insertRow(0,new Object[] {"","","","",""});
myModel.insertRow(0,new Object[] {"","","","",""});
JFrame frame = new JFrame();
frame.getContentPane().add(new JScrollPane(table));
frame.setSize(400, 300);
frame.setVisible(true);
When you place the cursor in the first cell, first line, enter some text, automatically in row1, col 4 appears 'nothing'. and that's it. but from the source-code it should display as well in row 5, col3 'Sum' which isn't. It is only displayed, when I move the selection to the last line.
Anybody has idea, how to update the display of JTable properly to see both values? I guess it is only the first fireTableChanged processed, the second is ignored.

Answer 1

Use the "code" formatting tags when posting code to it retains its original formatting.
Maybe this posting does what you want:
http://forum.java.sun.com/thread.jspa?forumID=57&threadID=566133