JavaFX TableColumn.setCellValueFactory()抛出空指针

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.stage.Stage;

public class Main extends Application {

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

    @Override
    public void start(Stage primaryStage) {
        TableView<Person> tableView = new TableView<>();
        TableColumn<Person, String> nameColumn = new TableColumn<>("Name");
        nameColumn.setCellValueFactory(new PropertyValueFactory<>("name"));

        // 设置数据模型
        ObservableList<Person> data = FXCollections.observableArrayList(
                new Person("John"),
                new Person("Jane"),
                new Person("Bob")
        );
        tableView.setItems(data);
        tableView.getColumns().add(nameColumn);

        primaryStage.setScene(new Scene(tableView));
        primaryStage.show();
    }

    public static class Person {
        private String name;

        public Person(String name) {
            this.name = name;
        }

        public String getName() {
            return name;
        }
    }
}