JAVAFX : How to update .css runtime

	import javafx.application.Application;
	import javafx.event.ActionEvent;
	import javafx.event.EventHandler;
	import javafx.scene.Scene;
	import javafx.scene.control.Button;
	import javafx.scene.input.KeyCode;
	import javafx.scene.input.KeyEvent;
	import javafx.scene.layout.StackPane;
	import javafx.stage.Stage;
	public class TrackerClient extends Application {
	@Override
	public void start(Stage primaryStage) {
	Button btn = new Button();
	btn.setText("Submit");
	StackPane root = new StackPane();
	root.getChildren().add(btn);
	final Scene scene = new Scene(root, 300, 250);
	primaryStage.setScene(scene);
	primaryStage.show();
	scene.getStylesheets().add(getClass().getResource("style1.css").toExternalForm());
	primaryStage.addEventHandler(KeyEvent.KEY_PRESSED, new EventHandler<KeyEvent>() {
	@Override
	public void handle(KeyEvent keyEvent) {
	if (keyEvent.getCode().equals(KeyCode.F5)) {
	scene.getStylesheets().clear();
	scene.getStylesheets().add(getClass().getResource("style.css").toExternalForm());
	} else {
	scene.getStylesheets().clear();
	scene.getStylesheets().add(getClass().getResource("style1.css").toExternalForm());
	}
	}
	});
	}
	public static void main(String[] args) {
	launch(args);
	}
	}
	//style.css
	.button{
	-fx-text-fill: rgb(49, 89, 23);
	-fx-border-color: rgb(49, 89, 23);
	-fx-border-radius: 5;
	-fx-padding: 3 6 6 6;
	}
	//style1.css
	.button{
	-fx-text-fill: rgb(149, 189, 123);
	-fx-border-color: rgb(149, 189, 123);
	-fx-border-radius: 7;
	-fx-padding: 5 8 8 8;
	}

view raw CSSUpdate.java hosted with ❤ by GitHub