Mastering JavaFX 10

Bidirectional binding

Bidirectional binding, meanwhile, has much fewer restrictions, because it ties properties harder, so there is no need to extra control them.

You can use setters:

 label2.textProperty().bindBidirectional(label.textProperty()); label2.setText("hi");

You can combine bidirectional and regular bindings:

 lblWidth.textProperty().bind(stage.widthProperty().asString()); lblWidth2.textProperty().bindBidirectional(lblWidth.textProperty());

And, you can bind one property bidirectionally several times:

 label.textProperty().bindBidirectional(label2.textProperty()); label.textProperty().bindBidirectional(label3.textProperty()); label.setText("hi"); // or label2.setText("hi"); or label3.setText("hi");  // any of them will update all ...