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

public class ButtonInPane extends Application {

    @Override // Override the start method in the Application class
    public void start(Stage primaryStage) {
// Create a scene and place a button in the scene
        StackPane pane = new StackPane();
        pane.getChildren().add(new Button("OK"));
        Scene scene = new Scene(pane, 200, 50);
        primaryStage.setTitle("Button in a pane"); // Set the stage title
        primaryStage.setScene(scene); // Place the scene in the stage
        primaryStage.show(); // Display the stage
    }

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