JavaFx-when fxml inject object field?

Question

I\'m new to javaFx,and I have found only within the @fxml function and initialize function the @fxml field not be null otherwise the @fxml field will always be null,is it true?

Answer 1

You are calling the static FXMLLoader.load(URL) method.

Since it's a static method, it knows nothing about the instance you are using to invoke it (which is bad practice anyway; your IDE should issue a warning about this). Specifically, it doesn't have a controller set.

You need to invoke an instance load() method, e.g.

FXMLLoader loader=new FXMLLoader();
loader.setController(this);
loader.setLocation(getClass().getResource("/fxml/Main.fxml"));

Parent pane = loader.load();