verride
    public void performCopy(@NotNull DataContext dataContext) {
      int[] rows = myTable.getSelectedRows();
      int[] columns = myTable.getSelectedColumns();

      StringBuilder builder = new StringBuilder();
      for (int row : rows) {
        if (!builder.isEmpty()) builder.append('\n');

        for (int col : columns) {
          builder.append(getCellTextValue(row, col));
          if (col < myTable.getColumnCount() - 1) builder.append("\t");
        }
      }

      CopyPasteManager.getInstance().setContents(new TextTransferable(builder.toString()));
    }


verride
    public void performCopy(@NotNull DataContext dataContext) {