Is there any markup technique in FXML similar to data templates in XAML?

Question

For example specifying UI for items in a ListView - declaratively.

The XAML way.

Answer 1

Take a look at the items titled fx:value, fx:factory, and Builders under the Instance Declarations section in the Introduction to FXML doc. There's also an example in the official FXML tutorial.

Generally, the main documentation page is a good starting point.