Query regarding updating rows in JTable

Question

Query regarding updating rows in JTable
Hello,
I have a JTable with 6 columns and 1000s of rows (which are data read from flat files)
I can select 1 or more rows and change the values of the
columns. each time I do this I need to update the values
in the flat file.
Currently I assign the updated Jtable values to a vector
Vector rowVector = (Vector)defaultModel.getDataVector();
then I iterate over the vector and compare the values with the (old) data
in the JTable.
            for(int rowCount = 0; rowCount<rowVector.size(); rowCount++){
                Vector v = (Vector)rowVector.elementAt(rowCount);
                    //smsList is the Vector that contains the old JTable values
                    for(int i=0; i<smsList.size(); i++){
                            //If colums values have been changed; add that
                            //vector value to another vector
                            selectedsmsList.add(smsList.get(i));
            for(int i=0; i<selectedsmsList.size(); i++){
                     //Update the values in the flat file
            }This works fine except that it takes ages to iterate over the updated vecor and un-updated,old vector; is there any way to directly get the list of rows that were updated in the jtable; so that I can directly do an I/O operation to update the jtablke values?

Answer 1

Just a suggestion.
You could add a listener and use a vector of booleans to keep track of the rows that have been changed. You could then iterate through this boolean vector and update the changed rows.
See
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#modelchange
Don't know whether this will be helpful.
Regards, Darryl