如何在JavaFX中切换阶段

Stage primaryStage = new Stage();

primaryStage.setScene(initialScene);

primaryStage.setScene(newScene);

primaryStage.show();

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

public class StageSwitchingExample extends Application {

    private Stage primaryStage;
    private Scene scene1;
    private Scene scene2;

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

    @Override
    public void start(Stage primaryStage) {
        this.primaryStage = primaryStage;

        // 创建场景1
        Button button1 = new Button("切换到场景2");
        button1.setOnAction(e -> switchToScene2());
        StackPane layout1 = new StackPane(button1);
        scene1 = new Scene(layout1, 300, 200);

        // 创建场景2
        Button button2 = new Button("切换到场景1");
        button2.setOnAction(e -> switchToScene1());
        StackPane layout2 = new StackPane(button2);
        scene2 = new Scene(layout2, 300, 200);

        // 设置初始场景
        primaryStage.setScene(scene1);
        primaryStage.setTitle("阶段切换示例");
        primaryStage.show();
    }

    private void switchToScene2() {
        primaryStage.setScene(scene2);
    }

    private void switchToScene1() {
        primaryStage.setScene(scene1);
    }
}