Hi, i have a hard time on useing JavaFx. How can i save the first and last name on a combobox like the examples in image. And also other button

here is my code

package bsnContactGUI;

import java.io.File;

import java.nio.file.Path;

import javax.swing.JFileChooser;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javafx.event.ActionEvent;

import javafx.fxml.FXML;

import javafx.fxml.FXMLLoader;

import javafx.scene.Parent;

import javafx.scene.Scene;

import javafx.scene.control.Alert;

import javafx.scene.control.Button;

import javafx.scene.control.ComboBox;

import javafx.scene.control.Label;

import javafx.scene.control.MenuItem;

import javafx.scene.control.TextField;

import javafx.scene.image.ImageView;

import javafx.stage.Stage;

public class BusConController {

public static JFrame frame;

private String txtFieldValue;

private String fileName;

private boolean fileSaved;

static ComboBox comboBox = new ComboBox();

boolean valid;

@FXML

private MenuItem mOpen;

@FXML

private MenuItem mSave;

@FXML

private MenuItem mSaveAs;

@FXML

private MenuItem mExit;

@FXML

private MenuItem mAbout;

@FXML

private Label lbContacts;

@FXML

private Label lbFirstName;

@FXML

private Label lbCompanyS;

@FXML

private Label lbPhone;

@FXML

private Label lbLastName;

@FXML

private Label lbeMail;

@FXML

private Button btnNew;

@FXML

private Button btnAdd;

@FXML

private Button btnUpdate;

@FXML

private Button btnDelet;

@FXML

private ImageView imageView;

@FXML

private TextField txtLastName;

@FXML

private TextField txtEMail;

@FXML

private TextField txtCompany;

@FXML

private TextField txtFirstName;

@FXML

private TextField txtPhone;

@FXML

void btnAdd(ActionEvent event) {

// create nexw client

ContactRecord contact = new ContactRecord(txtFirstName.getText(), txtLastName.getText(), txtPhone.getText(),

txtEMail.getText(), txtCompany.getText());

updateClientFields(contact);

// add the client to contact list

ContactRecordList.cList.add(contact);

// add client to combobox

comboBox.getItems().add(txtFieldValue);

// update selected item in combobox

// comboBox.sets(0);

// update button state

setDefaultButtonState();

}

@FXML

void btnDelet(ActionEvent event) {

if (JOptionPane.showConfirmDialog(frame, String.format("Delete %s?", comboBox.getValue()), "Delete",

JOptionPane.CANCEL_OPTION, JOptionPane.WARNING_MESSAGE) == JOptionPane.YES_OPTION) {

int idx = comboBox.getSelectionModel().getSelectedIndex();

comboBox.getSelectionModel().clearSelection(idx);

ContactRecordList.cList.remove(idx);

}

}

@FXML

void btnNew(ActionEvent event) {

clearTextFields();

setNewButtonState();

txtFirstName.requestFocus();

}

@FXML

void btnUpdate(ActionEvent event) {

int idx = comboBox.getSelectionModel().getSelectedIndex();

ContactRecord contact = ContactRecordList.cList.get(idx);

updateClientFields(contact);

// update the combo box

comboBox.getItems().add(idx, contact.getFLName());

comboBox.getItems().remove(idx + 1);

comboBox.getSelectionModel().select(idx);

}

@FXML

void comboBox(ActionEvent event) {

updateTextFields(comboBox.getSelectionModel().getSelectedIndex());

setDefaultButtonState();

}

@FXML

void mAboutAction(ActionEvent event) {

try {

Parent aboutWindow = (Parent) FXMLLoader.load(getClass().getResource("About.fxml"));

Scene scene = new Scene(aboutWindow);

Stage stage = new Stage();

stage.setTitle("About");

// stage.getIcons().add(new Image(new FileInputStream("images/slcclogo.png")));

stage.setScene(scene);

stage.show();

} catch (Exception e) {

System.out.println("Can't open Help window.");

}

}

@FXML

void mExitAction(ActionEvent event) {

System.exit(0);

}

@FXML

void mOpenAction(ActionEvent event) {

JFileChooser fileChooser = new JFileChooser();

fileChooser.setCurrentDirectory(new File("."));

int result = fileChooser.showOpenDialog(frame);

// if user clicked Cancel button on dialog, return

if (result == JFileChooser.CANCEL_OPTION)

return;// System.exit(1);

// return Path representing the selected file

Path filePath = fileChooser.getSelectedFile().toPath();

fileName = filePath.toString();

// clear comboBox and list

if (!ContactRecordList.cList.isEmpty()) {

// comboBox.setSelectionModel(new saComboBoxModel());

ContactRecordList.cList.clear();

}

// read the file and load the comboBox

if (ContactRecordList.readContactFile(fileName)) {

loadContactComboBox();

setDefaultButtonState();

fileSaved = true;

} else {// no records read - set buttons

setNewButtonState();

}

}

@FXML

void mSaveAction(ActionEvent event) {

if (ContactRecordList.cList.size() == 0) {

JOptionPane.showMessageDialog(frame, "There are not contacts to save!", "Woops...",

JOptionPane.ERROR_MESSAGE);

return;

}

if (!fileSaved) {

openFileSaverDialog();

}

ContactRecordList.writeContactFile(fileName);

}

@FXML

void mSaveAsAction(ActionEvent event) {

if (ContactRecordList.cList.size() == 0) {

JOptionPane.showMessageDialog(frame, "There are not contacts to save!", "Woops...",

JOptionPane.ERROR_MESSAGE);

return;

}

if (openFileSaverDialog())

ContactRecordList.writeContactFile(fileName);

}

@FXML

void txtCompany(ActionEvent event) {

BusConController.this.txtFieldValue = BusConController.this.txtCompany.getText();

BusConController.this.valid = BC_Validate.isValidCompanyName(BusConController.this.txtFieldValue);

if (!BusConController.this.valid) {

Alert alert = new Alert(Alert.AlertType.INFORMATION);

alert.setTitle("Error");

alert.setHeaderText("");

String s = "Invalid Company Name";

alert.setContentText(s);

alert.show();

} else {

// BusConController.this.txtEMail.requestFocus();

}

}

@FXML

void txtEmail(ActionEvent event) {

BusConController.this.txtFieldValue = BusConController.this.txtEMail.getText();

BusConController.this.valid = BC_Validate.isValidEmail(BusConController.this.txtFieldValue);

if (!BusConController.this.valid) {

Alert alert = new Alert(Alert.AlertType.INFORMATION);

alert.setTitle("Error");

alert.setHeaderText("");

String s = "Invalid Email";

alert.setContentText(s);

alert.show();

} else {

BusConController.this.txtCompany.requestFocus();

}

}

@FXML

void txtFirstName(ActionEvent event) {

BusConController.this.txtFieldValue = BusConController.this.txtFirstName.getText();

BusConController.this.valid = BC_Validate.isValidFirstName(BusConController.this.txtFieldValue);

if (!BusConController.this.valid) {

Alert alert = new Alert(Alert.AlertType.INFORMATION);

alert.setTitle("Error");

alert.setHeaderText("");

String s = "Invalid First Name";

alert.setContentText(s);

alert.show();

} else {

BusConController.this.txtLastName.requestFocus();

}

}

@FXML

void txtLastName(ActionEvent event) {

BusConController.this.txtFieldValue = BusConController.this.txtLastName.getText();

BusConController.this.valid = BC_Validate.isValidLastName(BusConController.this.txtFieldValue);

if (!BusConController.this.valid) {

Alert alert = new Alert(Alert.AlertType.INFORMATION);

alert.setTitle("Error");

alert.setHeaderText("");

String s = "Invalid Last Name";

alert.setContentText(s);

alert.show();

} else {

BusConController.this.txtPhone.requestFocus();

}

}

@FXML

void txtPhone(ActionEvent event) {

BusConController.this.txtFieldValue = BusConController.this.txtPhone.getText();

BusConController.this.valid = BC_Validate.isValidPhone(BusConController.this.txtFieldValue);

if (!BusConController.this.valid) {

Alert alert = new Alert(Alert.AlertType.INFORMATION);

alert.setTitle("Error");

alert.setHeaderText("");

String s = "Invalid Phone Number";

alert.setContentText(s);

alert.show();

} else {

BusConController.this.txtEMail.requestFocus();

}

}

void clearTextFields() {

txtFirstName.setText("");

txtLastName.setText("");

txtPhone.setText("");

txtEMail.setText("");

txtCompany.setText("");

}

private boolean openFileSaverDialog() {

JFileChooser fileChooser = new JFileChooser();

fileChooser.setCurrentDirectory(new File("."));

int result = fileChooser.showSaveDialog(null);

// if user clicked Cancel button on dialog, return

if (result == JFileChooser.CANCEL_OPTION)

return false;// System.exit(1);

// return Path representing the selected file

fileName = fileChooser.getSelectedFile().getName();

return true;

}

void loadContactComboBox() {

for (ContactRecord item : ContactRecordList.cList) {

comboBox.getItems().add(item.getFLName());

// System.out.println(item);

}

comboBox.getSelectionModel().select(0);

updateTextFields(0);

}

void setNewButtonState() { // if file not found/loaded | new button clicked

btnNew.setDisable(false);

btnAdd.setDisable(false);

btnUpdate.setDisable(true);

btnDelet.setDisable(true);

}

void setDefaultButtonState() {// if file loaded successfully | new contact added

btnNew.setDisable(false);

btnAdd.setDisable(true);

btnUpdate.setDisable(false);

btnDelet.setDisable(false);

}

void updateClientFields(ContactRecord contact) {

contact.setFirstName(txtFirstName.getText());

contact.setLastName(txtLastName.getText());

contact.setPhoneNumber(txtPhone.getText());

contact.setEmailAddress(txtEMail.getText());

contact.setCompany(txtCompany.getText());

}

void updateTextFields(int selectedIndex) {

ContactRecord contact = ContactRecordList.cList.get(selectedIndex);

txtFirstName.setText(contact.getFirstName());

txtLastName.setText(contact.getLastName());

txtPhone.setText(contact.getPhoneNumber());

txtEMail.setText(contact.getEmailAddress());

txtCompany.setText(contact.getCompany());

}

}

package bsnContactGUI;

import java.io.FileInputStream;

import javafx.application.Application;

import javafx.fxml.FXMLLoader;

import javafx.scene.Parent;

import javafx.scene.Scene;

import javafx.scene.image.Image;

import javafx.stage.Stage;

public class BusConRun

extends Application

{

public void start(Stage stage)

throws Exception

{

Parent root =

(Parent)FXMLLoader.load(getClass().getResource("BusCon.fxml"));

Scene scene = new Scene(root);

stage.setTitle("");

//stage.getIcons().add(new Image(new FileInputStream("images/slcclogo.png")));

stage.setScene(scene);

stage.show();

}

public static void main(String[] args)

{

launch(args);

}

}

package bsnContactGUI;

public class ContactRecordApp

{

public static void main(String [] args)

{

ContactRecordList contactList = new ContactRecordList();

contactList.readContactFile("contacts.ser");

contactList.processContactFile();

contactList.writeContactFile("contacts.ser");

}//end main

}//end class ContactRecordTest

about.fxml

"1.0" encoding="UTF-8"?>

"200.0" prefWidth="300.0" xmlns="http://javafx.com/javafx/10.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="bsnContactGUI.BusConController">

"133.0" layoutY="14.0" text="About" />

"51.0" layoutY="40.0" prefHeight="128.0" prefWidth="198.0" text="Test About" />

"34.0" fitWidth="56.0" layoutX="18.0" layoutY="5.0" pickOnBounds="true" preserveRatio="true" />

BusCon.fxml

"1.0" encoding="UTF-8"?>

"350.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/10.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="bsnContactGUI.BusConController">

"36.0" prefWidth="600.0">

"false" text="File">

"mOpen" mnemonicParsing="false" onAction="#mOpenAction" text="Open" />

"mSave" mnemonicParsing="false" onAction="#mSaveAction" text="Save" />

"mSaveAs" mnemonicParsing="false" onAction="#mSaveAsAction" text="Save As..." />

"mExit" mnemonicParsing="false" onAction="#mExitAction" text="Exit" />

"false" text="Help">

File Help jackson smith sally jones asdf asdf ol Contact Management System First Na... Last Name VAbc D Abc Phone eMail Company New Add Update Delete File Help jackson smith sally jones asdf asdf ol Contact Management System First Na... Last Name VAbc D Abc Phone eMail Company New Add Update Delete