JavaFX: TableView: Arrow for a column sorted by default

Question

I have a simple java fx application which has a table view. The table view shows some data that is sorted in a certain order. Is there a way to show the arrow(by default) in

Answer 1

Try

...
firstNameCol.setSortType(TableColumn.SortType.ASCENDING);
...
tableView.setItems(data);
tableView.getColumns().addAll(firstNameCol, lastNameCol, emailCol, ageCol);
tableView.getSortOrder().add(firstNameCol);
...

Also see the discussions on: Javafx: Re-sorting a column in a TableView.