TableView не отображаются значения столбцов

package sample;
 
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
 
public class Main extends Application {
 
    @Override
    public void start(Stage primaryStage) throws Exception{
        Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
        primaryStage.setScene(new Scene(root, 600, 400));
        primaryStage.show();
    }
 
    public static void main(String[] args) {
        launch(args);
    }
}

package sample;
 
public class Student {
 
    public String id;
    public String name;
    public String faculty;
    public String speciality;
 
    Student(String id, String name, String faculty, String speciality){
        this.id = id;
        this.name = name;
        this.faculty = faculty;
        this.speciality = speciality;
    }
}

package sample;
 
import javafx.fxml.FXML;
import javafx.scene.control.TableView;
import javafx.collections.FXCollections;
import javafx.scene.control.TableColumn;
import javafx.collections.ObservableList;
import javafx.scene.control.cell.PropertyValueFactory;
 
public class Controller {
 
    @FXML
    private TableView<Student> mytable;
 
    @FXML
    private TableColumn<Student, String> id;
 
    @FXML
    private TableColumn<Student, String> name;
 
    @FXML
    private TableColumn<Student, String> faculty;
 
    @FXML
    private TableColumn<Student, String> speciality;
 
    @FXML
    private void initialize(){
 
        ObservableList<Student> students = FXCollections.observableArrayList();
        students.add(new Student("1", "Max", "IRIT", "ASU"));
        students.add(new Student("2", "Ivan", "IRIT", "ASU"));
 
        id.setCellValueFactory(new PropertyValueFactory<Student, String>("id"));
        name.setCellValueFactory(new PropertyValueFactory<Student, String>("name"));
        faculty.setCellValueFactory(new PropertyValueFactory<Student, String>("faculty"));
        speciality.setCellValueFactory(new PropertyValueFactory<Student, String>("speciality"));
 
        mytable.setItems(students);
    }
}