Setting the field names in the table

I welcome!

Faced with this problem, take a look -

I would like to be able to specify the column names of correspondences defined like this -

Table is set up as follows:

Table t = outerSystemQuery.executeQuery ();
      t.setHeight ("100%");
      t.setWidth ("320px");
      t.setStyleName ("iso3166");
      t.setSelectable (true);
      t.setImmediate (true);
      t.setColumnReorderingAllowed (true);
      t.setColumnCollapsingAllowed (true);
      t.setColumnHeaderMode (Table.ROW_HEADER_MODE_INDEX);
      t.requestRepaint ();