Java JTable RowSorter throws exception

Question

for me its working fine... I am using vector to store data..

remove the line ,row = table.convertRowIndexToModel(row);

dont use setmodel method,, table model public class STOCKmodel extends DefaultTableModel {

 String    ColumnName[]   = {"Item Code"   ,"Item Name"   ,"Uom","Unit_Price" ,"Opening_quantity "    ,"Current_Received_quantity" ,"Current_Issued_Quantity", "Closing_Stock", "Closing_Value" ,"Minimum"};
 String    ColumnType[]   = {"A"           ,"B"           ,"T"  ,"C"   ,"D"   ,"E"                    ,  "F"             ,     "G"           ,    "R"    ,"s"     };
 int      iColumnWidth[]  = {120           , 200          ,140  ,200   ,70    ,200                    ,   70             ,     70            ,    200     ,200     };
 DecimalFormat df;
 public STOCKmodel()
 {
      setDataVector(getRowData(),ColumnName);
 }

 public Class getColumnClass(int iCol)
 {
      return getValueAt(0,iCol).getClass();
 }
 public Object getValueAt(int row, int column)
      {
    //==================
  df = new DecimalFormat("#.##");
 //Closing_value  column_N0 7
 //Closing_Stock column_No 6
 //Unit_Price   column_No 2
 //=====================


//=======================


 if (column == 3)
 {
 //String h = getValueAt(row,5).toString();
 //String j =getValueAt(row, 6).toString();
 double i,d,t;
 try{

 String h = getValueAt(row,8).toString();
 String j =getValueAt(row, 7).toString();
// String l =getValueAt(row, 7).toString();


 i = Double.parseDouble(h);
 d = Double.parseDouble(j);
 if (d==0)
 d=1;
 //t = Double.parseDouble(l);
 }

  catch(NumberFormatException e)
 {
   i=0;
   d=0;
   t=0;
 }


 //================================================
 //double sub =i*d;


 //val = df.format(val);
 String tot ;
 //String.valueOf(int);
 try{
    //if(val==0)
    //tot =null;
      double val = i/d;
      tot = Double.toString(val);
      tot = df.format(val);
      if(val==0)
      tot ="nil";
    //tot =String.valueOf(sub);
 }
 catch (ArithmeticException ae) {
         tot ="nil";
}
 catch(NumberFormatException e)
 {
 tot ="nil";
 }
 //================================================

 return tot;
 }




           return super.getValueAt(row, column);
      }



 public boolean isCellEditable(int iRow,int iCol)
 {

      return false;
 }

 public boolean isCellEdit(int iRow,int iCol)
 {

      return true;
 }

 private Object[][] getRowData()
 {
      Object RowData[][] = new Object[1][ColumnName.length];

      for(int i=0;i<ColumnName.length;i++)
           RowData[0][i] = "";
      return RowData;
 }
 public void appendRow(Vector theVect)
 {
      insertRow(getRows(),theVect);
 }

 public int getRows()
 {
      return super.dataVector.size();
 }
 public void appendEmptyRow()
 {
      Vector<Object>  curVector = new Vector<Object>();
      for(int i=0;i<ColumnName.length;i++) {
                 curVector.addElement(" ");
      }
      insertRow(getRows(),curVector);
 }

 }