Displaying row number in JTable : Pls Help

[Raj Sikka]

Hi,
I have a JTable with 2 columns(say).
I need to add a third column which should display the row number in it.
How do i display the row number .Is there any API to get the row number of a JTable?
When i remove a row from JTable the row numbers should automatically update.
How should i do?
Pls suggest.
Thanks,
Raj

[Don Kiddick]

You need to write your TableModel class. If your currently using DefaultTableModel or not specifiy a table model ( DefaultTableModel is used by default.) then you can do something like this :

 
class LineNumberTableModel extends DefaultTableModel 
{
  public int getColumnCount() 
  {
    return super.getColumnCount() + 1;
  }
  public Object getValueAt( int row, int col )
  {
    if( col == getColumnCount() )
    {
       return new Integer( row );
    } else 
    {
       return super.getValue( row, col );
  }
}
 

does that help ?
D.

[Jose Botella]

Hi Raj, please do not post duplicates. Thank you.