Java SE (Java Platform, Standard Edition)

Dear all,
I need your help.
I have a list of object, object properties are a name (string) and a path (string).
In my swing jtable I need to show string and an image, that is read from path.
So I iterate list and for each iteration I do

                //get name
                String csName = ...
                //get array of byte from path
                byte[] cImg = csFullFile.getBytes();
                
 
                Icon icon = new ImageIcon(cImg);
                
                Object rowData[] = new Object[]{name, icon};
                //add row
                dtm.addRow(rowData);

What happens it that list is populated with correct number of rows...property name is shown but it's not shown image.
I think there is some problem with update of cell or layout...could you help me?
What code I've to run to show image in the jtable?

Thanks,
Regards