RowSorter e getColumnClass

[Jimmy5nomana]

 private void crea_tabella(String[][] data, boolean flag){
          
          modeltable = new Personal_model(data,col);           
          table = new JTable(modeltable);

          /*if(flag==true){
               TableColumn tcol;
               table.setDefaultRenderer(Object.class, new MyTableCellRenderer());
          }*/


          scroll = new JScrollPane(table);

          table.setColumnSelectionAllowed(true);
          table.setAutoCreateRowSorter(true); 
          .....
          ..... 

class Personal_model extends DefaultTableModel{
     
     Personal_model(String[][] s,String[] i){
          super(s,i);
     }
     
     
     @Override
     public Class getColumnClass(int columnIndex){
              
          switch (columnIndex) {
                  case 0:
                      return String.class;
                  case 1:
                      return String.class;
                  case 2:
                      return Integer.class;
                  case 3:
                      return String.class;
                  case 4:
                      return String.class;

         }
    } 

Qualcosa non funziona e immagino sia nel metodo crea_tabella, ma non ci arrivo