JavaFX: can you create a stage that doesn't show on the task bar and is undecorated?

Question

I\'m trying to create a stage that doesn\'t appear on the Windows task bar and is undecorated (no borders and no close/minimize/maximize buttons). My end goal is to create a

Answer 1

Inspired by @Loki solution with a little upgrade (in my opinion)

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javafx.stage.StageStyle;

public class TransparentAndUtilityStageApp extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        primaryStage.initStyle(StageStyle.UTILITY);
        primaryStage.setOpacity(0.);
        primaryStage.show();

        Stage stage = new Stage();
        Label label = new Label("Rainmeter");
        StackPane stackPane = new StackPane(label);
        stackPane.setPrefSize(600, 400);
        stackPane.setStyle("-fx-background-color: transparent;");

        Scene scene = new Scene(stackPane);
        scene.setFill(null);

        stage.initOwner(primaryStage);
        stage.initStyle(StageStyle.TRANSPARENT);
        stage.setScene(scene);
        stage.show();
    }
}