Validating the jtable data on cell

[anilkumar_vist]

I have a jtable in which contains 4 columns
1 max marks
2 min marks
3 secured marks
4 pass/fail
1 ,2,4 are not editable only secured marks is editable
on change of secured marks i want to validate marks
I implemented TableModelListener i am able to get row,column,value etc but it is throwing exception on setValueAt(x,r,4);
plz help....

[Fubarable]

I have a jtable in which contains 4 columns
1 max marks
2 min marks
3 secured marks
4 pass/fail

Columns should go from 0 to 3 then, right?

1 ,2,4 are not editable only secured marks is editable
on change of secured marks i want to validate marks
I implemented TableModelListener i am able to get row,column,value etc but it is throwing exception on setValueAt(x,r,4);
plz help....

A couple of problems:
1) You're trying to set column 4 when columns go from 0 to 3?
2) You've got an exception that you're not showing us
3) You've got a bug in code that you're not showing us..

How can you expect much help with the limited information you've provided?

[anilkumar_vist]

This is my code and the text with red color that situation me exception
public void changeData(TableModelEvent e){
status=3;
try{
int row=e.getFirstRow();
if(e.getType()==TableModelEvent.UPDATE){
TableModel tm=(TableModel)e.getSource();
int secured = Integer.parseInt(tblMarks.getModel().getValueAt(ro w, 3).toString());
int marks = Integer.parseInt(tblMarks.getModel().getValueAt(ro w, 2).toString());
int maxMarks = Integer.parseInt(tblMarks.getModel().getValueAt(ro w, 1).toString());

if (secured >= marks) {
try{
tm.setValueAt("P",row,4);
}catch(Exception ex){}

}
else {
try{
tm.setValueAt("F",row,4);
}catch(Exception ex){}
}
tblMarks.setModel(tm);
}
}catch(Exception ex){
errMsg.setText("Invalid Number");

}

}

[Tolls]

What exception are you getting, with stack traces?

Of course if this is actually your code then you are eating exceptions so you won't be able to give us that info.

[Fubarable]

Code tags please

Exception text, please