创建静态类以在Java FXML中打开新窗口

public class WindowManager {
    private static Stage primaryStage; // 主舞台

    public static void setPrimaryStage(Stage stage) {
        primaryStage = stage;
    }

    public static void openNewWindow(String fxmlPath, String title) {
        try {
            FXMLLoader loader = new FXMLLoader(WindowManager.class.getResource(fxmlPath));
            Parent root = loader.load();
            Stage newStage = new Stage();
            newStage.setTitle(title);
            newStage.setScene(new Scene(root));
            newStage.initModality(Modality.WINDOW_MODAL);
            newStage.initOwner(primaryStage);
            newStage.show();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

public class MainController {
    @FXML
    private void openNewWindow() {
        WindowManager.openNewWindow("newWindow.fxml", "New Window");
    }
}