Setting the field names in the table

Flow
1

I welcome!

Faced with this problem, take a look -
11901.png

2

I would like to be able to specify the column names of correspondences defined like this -
11902.png

3

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 ();