java controller

controller.java

package sample;

import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;

public class Controller {

    @FXML
    private TextField tfId;
    @FXML
    private TextField tfTitle;
    @FXML
    private TextField tfAuthor;
    @FXML
    private TextField tfYear;

    @FXML
    private Button btnAdd;

    @FXML
    private TableView<Book> tvData;
    @FXML
    private TableColumn<Book, Integer> tcId;
    @FXML
    private TableColumn<Book, String> tcTitle;
    @FXML
    private TableColumn<Book, String> tcAuthor;
    @FXML
    private TableColumn<Book, Integer> tcYear;

    @FXML
    private ObservableList<Book> bookData =
            FXCollections.observableArrayList();

    @FXML
    public void initialize() {
        tcId.setCellValueFactory(new PropertyValueFactory<Book, Integer>("id"));
        tcTitle.setCellValueFactory(new PropertyValueFactory<Book, String>("title"));
        tcAuthor.setCellValueFactory(new PropertyValueFactory<Book, String>("author"));
        tcYear.setCellValueFactory(new PropertyValueFactory<Book, Integer>("year"));
        tvData.setItems(bookData);
    }

    @FXML
    public void onClickAdd() {
        bookData.add(new Book(Integer.parseInt(tfId.getText()),
                tfTitle.getText(),
                tfAuthor.getText(),
                Integer.parseInt(tfYear.getText())));
        System.out.println("Data added");
    }


}