Coding With Joseph

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Java Quiz #45

Window Not Appearing

easyJavaFX

This JavaFX app compiles and runs but no window appears. What is the bug?

📄 Code

1@Override
2public void start(Stage primaryStage) {
3    VBox root = new VBox();
4    root.getChildren().add(new Label("Hello!"));
5    Scene scene = new Scene(root, 400, 300);
6    primaryStage.setScene(scene);
7    primaryStage.setTitle("My App");
8    // window never appears
9}