JAVA

javafx event resize

Stage stage = new Stage();

stage.widthProperty().addListener((obs, oldVal, newVal) -> {
  //on change width
});

stage.heightProperty().addListener((obs, oldVal, newVal) -> {
  //on change height
});

javafx event resize

stage.widthProperty().addListener((obs, oldVal, newVal) -> {
     // Do whatever you want
});

stage.heightProperty().addListener((obs, oldVal, newVal) -> {
     // Do whatever you want
});

javafx resizing window event

stage.minHeightProperty().bind(stage.widthProperty().multiply(0.5));
stage.maxHeightProperty().bind(stage.widthProperty().multiply(0.5));

javafx resizing window event

container.widthProperty().addListener(new ChangeListener<Number>() {
        @Override
        public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue) {
            if (newValue.floatValue()!=oldValue.floatValue()) resizeKids(newValue);
        }
    });