fxml

JavaFX FXML, what is the Controller for?

The lessons about FXML talk about the benefits and advantages of separating the interface and logic in programs, but there is ... the logic and interface classes) . What is its idea, what function does it perform? What is the advantage of this approach?

JavaFX fx:id NullPointerException

If I create JavaFX objects myself, in java code, and call their methods, there are no problems. If I define controls in fxml ... ion._runLoop(Native Method) at com.sun.glass.ui.win.WinApplication.lambda$null$3(WinApplication.java:177) ... 1 more