title: how to Update JTable
body: <p>Good evening</p>
  
  <p>I have a JTable that I built with a TableModel how to update the elements of the table, because when I do table = new JTable (new TableProg (elementTab)) I create another table above the original table and it is very ugly</p>
  
  <p>So for example how to update element of table in a loop at each iteration as "elementTab" changes?</p>
  
  <p>thank you very much</p>