table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); 

 
table.setOpaque(false);

JTableHeader header = table.getTableHeader();
header.setPreferredSize( new  Dimension ( 85 , 65 ));

 public   class  MultiLineHeaderRenderer  extends  JList  implements  TableCellRenderer {
   public  MultiLineHeaderRenderer() {
    setOpaque(true);
    setForeground(UIManager.getColor("TableHeader.foreground"));
    setBackground(UIManager.getColor("TableHeader.background"));
    setBorder(UIManager.getBorder("TableHeader.cellBorder"));

    ListCellRenderer renderer = getCellRenderer();
    ((JLabel)renderer).setHorizontalAlignment(JLabel.CENTER);
    ((JLabel)renderer).setVerticalTextPosition(JLabel.CENTER);
    setCellRenderer(renderer);
  }

   public  Component getTableCellRendererComponent(JTable table, Object value,
                    boolean  isSelected,  boolean  hasFocus,  int  row,  int  column) {
    setFont(table.getFont());
    String str = (value ==  null ) ? "" : value.toString();
    BufferedReader br =  new  BufferedReader( new  StringReader(str));
    String line;
    Vector v =  new  Vector();
     try  {
       while  ((line = br.readLine()) !=  null ) {
        v.addElement(line);
      }
    }  catch  (IOException ex) {
      ex.printStackTrace();
    }
    setListData(v);
     return   this ;
  }
}

        MultiLineHeaderRenderer renderer =  new  MultiLineHeaderRenderer();
        Enumeration enum = table.getColumnModel().getColumns();
         while  (enum.hasMoreElements()) {
          ((TableColumn)enum.nextElement()).setHeaderRenderer(renderer);
        }

  protected  JPanel createPanel() {
        JPanel pn =  new  JPanel();
        pn.setLayout( new  BorderLayout());
        pn.add(createTableInScrolPane(), BorderLayout.CENTER);
        table.getSelectionModel().addListSelectionListener(
                 new  SaveChangesListener());
         return  pn;
    }

     protected  JScrollPane createTableInScrolPane()
    {   
        table = createTable();
        JScrollPane scroll =  new  JScrollPane(table);
         return  scroll;
    }