How to add Computed column to TableModel at runtime ?

Hello All,

Could you please share suggestion/idea how can I add computed/derived column to an existing TableModel ?

I've 7 column in the existing TableModel. Now I've to add 8th column and it'll be based on Col2, Col3 & Col5.

Value of Col8 should be in following logic.

public TableModel GetDerivedTable(ResultSet rs)

{

TableModel model = GetTable(rs); // I've done this

//Now have to modify here

If(Col2==true && Col5==true)

Then{Col8 = 1}

Else IF((Col2==true && Col5==false) || (Col2==false && Col5==true))

Then{Col8 = 0}

Else IF(Col2==false && Col5==false)

Then{Col8=-1}

return model;

}

Any suggestion please...