Jtable - getvalueAt() issue

I want to know why my getvalueAt() is picking old data when Enter is pressed.
I tried all update and table change modules, but I couldn't get it working. I am making an Excel sheet-like structure in JTable, in which one row updates on change to another row.

public void setValueAt(Object aValue, int row, int column) {
        if(column == 2 || column == 3 || column == 4 || column == 5)
    {
        System.out.println("2 is: "+getValueAt(row, 2));
        System.out.println("3 is: "+getValueAt(row, 3));
        System.out.println("4 is: "+getValueAt(row, 4));
        long closingbalance = Long.parseLong(getValueAt(row,2).toString())
            + Long.parseLong(getValueAt(row,3).toString())
            - Long.parseLong(getValueAt(row,4).toString());
        System.out.println("closing: "+closingbalance);
        super.setValueAt(closingbalance,row, 6);
    }               
    super.setValueAt(aValue, row, column);
}

Solution

I can't be able to answering your question on another forum, because a new forums version driving me crazy

there no reason parsing value from JTable,
JTable implemets all important data types
examples here or here
for better help edit your question with SSCCE