Setting Tooltip for TableColumn in FXML - javafx

Question

For a Button, I can set a Tooltip via
<Button>
<tooltip>
<Tooltip text="Tooltip text" />
</tooltip>
</Button>
How can I do the same/ similar for a TableColumn?
<TableColumn>
<cellValueFactory>
<PropertyValueFactory property="someProperty" />
</cellValueFactory>
<tooltip>
<Tooltip text="Tooltip text" />
</tooltip>
</TableColumn>
Does not work..

Answer 1

Assuming you want a tooltip on the column header, one way is to set a graphic on the TableColumn instead of setting text, and to set the tooltip on the graphic.
I.e. instead of:
<TableColumn text="Column 1">
<cellValueFactory>
<PropertyValueFactory property="someProperty" />
</cellValueFactory>
</TableColumn>
you can do
<TableColumn>
<cellValueFactory>
<PropertyValueFactory property="someProperty" />
</cellValueFactory>
<graphic>
<Label text="Column 1">
<tooltip>
<Tooltip text="Tooltip text" />
</tooltip>
</Label>
</graphic>
</TableColumn>
Note that this has some side-effects. For example, the table view has a menu button that controls the visibility of the columns. This is populated by menu items whose text is the text of the column: so using this technique will make that menu button unusable. Creating a table column with a tooltip while preserving the table column's text value requires some CSS hackery.