How do I create a JavaFX 8 ComboBox which can bind to a field on a seperate POJO

How do I create a JavaFX 8 ComboBox which can bind to a field on a seperate POJO

By : user2954505
Date : November 22 2020, 10:31 AM
will help you I was not able to change my datamodel so I found the following solution which works.
code :
// Handle ComboBox event.
myComboBox.setOnAction((event) -> {
    LookUpDataValue selected = myComboBox.getSelectionModel().getSelectedItem();
    if(selected != null){

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Is it possible to bind a StringProperty to a POJO's String in JavaFX?

Is it possible to bind a StringProperty to a POJO's String in JavaFX?

By : Yuvarani Yamini
Date : March 29 2020, 07:55 AM
may help you . You can obviously set the values in Entity without doing anything except using a listener in JavaFX. If you want to go the other way you can add java.beans.PropertyChangeSupport. It's not in a javafx package.
code :
package bindpojo;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class BindPojo extends Application {
    StringProperty fxString = new SimpleStringProperty();
    StringProperty tmpString = new SimpleStringProperty();

    public void start(Stage primaryStage) {
        VBox vbox = new VBox();
        TextField text = new TextField();
        Label label1 = new Label();
        Label label2 = new Label();
        Entity entity = new Entity("");
        Scene scene = new Scene(vbox, 300, 200);


        fxString.addListener(new ChangeListener<String>() {
            public void changed(ObservableValue<? extends String> observable, String oldValue, String newValue) {

        entity.addPropertyChangeListener(new PropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent evt) {


    public class Entity {
    private String m_Value;
    private final PropertyChangeSupport pcs = new PropertyChangeSupport(this);
    public Entity(String value) { m_Value = value; }
    public String getValue() { return m_Value; }
    public void setValue(String value) {
        pcs.firePropertyChange("m_Value", m_Value, value);
        m_Value = value;
    public void addPropertyChangeListener(PropertyChangeListener listener) {
Bind combobox property of selected item in combobox to field

Bind combobox property of selected item in combobox to field

By : Perhack
Date : March 29 2020, 07:55 AM
I wish this help you I have an issue with binding in ComboBox. I have searched in Google and so, but I haven't been able to find the answer. , The solution was simple as always:
code :
SelectedValue="{Binding Path=Firm, Mode=TwoWay}">
How to bind ComboBox to a list in JavaFX?

How to bind ComboBox to a list in JavaFX?

By : salman
Date : March 29 2020, 07:55 AM
may help you . No there is no way to bind a simple list, since it's not observable. Even with a ObservableList, there would be the problem of the updates coming from a different thread.
You could however use a synchronized list and use the value property to pass the current size, which would allow you to add the items via listener.
code :
public void start(Stage primaryStage) {
    ListView<String> listView = new ListView<>();
    List<String> targetList = listView.getItems();
    final List<String> ips = Collections.synchronizedList(new ArrayList<>());
    Task<Integer> task = new Task<Integer>() {

        protected Integer call() throws Exception {
            Random random = new Random();
            int size;
            for (size = 0; size < 100; size++) {

            return size;

    task.valueProperty().addListener((observable, oldValue, newValue) -> {
        // add values not yet in the target list.
        for (int i = targetList.size(), newSize = newValue; i < newSize; i++) {

    new Thread(task).start();

    Scene scene = new Scene(listView);

ips = comboBox.getItems();

Task task = new Task<Void>() {
    public Void call() throws UnknownHostException {
        InetAddress localhost = InetAddress.getLocalHost();
        byte[] ip = localhost.getAddress();
        for (int i = 10; i <= max; i++) {
            if (isCancelled()) {
            try {
                ip[3] = (byte) i;
                InetAddress address = InetAddress.getByAddress(ip);

                if (address.isReachable(100)) {
 //============================== Populating List ===============//
                    final String hostName = address.getHostName();
                    // do update on application thread
                    Platform.runLater(() -> ips.add(hostName));
            } catch (Exception e) {
            updateProgress(i, max);

        return null;
JavaFX - Bind LinkedHashMap to ComboBox

JavaFX - Bind LinkedHashMap to ComboBox

By : Sidiq
Date : March 29 2020, 07:55 AM
Hope this helps I have LinkedHashMap with data from database. , You should use an ObservableMap:
code :
private Map<Integer, String> linkedHashMap = new LinkedHashMap<>();

ComboBox<String> c = new ComboBox<>();
ObservableMap<Integer, String> observableMap = FXCollections.observableMap(linkedHashMap);
observableMap.addListener(new MapChangeListener<Integer, String>() {
    public void onChanged(
            javafx.collections.MapChangeListener.Change<? extends Integer, ? extends String> change) {
        if(change.wasAdded()) {
        } else if(change.wasRemoved()) {
observableMap.put(someInt, "someValue");
How to bind methods to combobox in JavaFX?

How to bind methods to combobox in JavaFX?

By : motyros
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , In your controller define an onAction(ActionEvent event) action handler for your combo box. Link the fxml to your controller action handler via onAction="#choiceMade" (where choiceMade is the arbitrary name I chose for the action handler method). In your action handler perform a switch on the combo box value to invoke the appropriate method handler for the selected value.
code :
<?xml version="1.0" encoding="UTF-8"?>

<?import java.lang.String?>
<?import javafx.collections.FXCollections?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.ComboBox?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.VBox?>

<VBox maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="104.0" prefWidth="226.0" spacing="10.0" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.ComboActionController">
      <Label fx:id="choiceLabel" />
      <ComboBox fx:id="comboShapes" onAction="#choiceMade" prefWidth="150.0" value="Random">
            <FXCollections fx:factory="observableArrayList">
               <String fx:value="Random" />
               <String fx:value="Small Exploder" />
               <String fx:value="Gospler Glider Run" />
               <String fx:value="Glider" />
      <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class ComboActionApp extends Application {
    public void start(Stage stage) throws Exception {
        FXMLLoader loader = new FXMLLoader(getClass().getResource("ComboAction.fxml"));
        Parent root = loader.load();
        stage.setScene(new Scene(root));

    public static void main(String[] args) {
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;

public class ComboActionController {

    private ComboBox<String> comboShapes;

    private Label choiceLabel;

    void choiceMade(ActionEvent event) {
        String choice = comboShapes.getValue();

                "Chosen: " + choice

        switch (choice) {
            case "Random":

            case "Small Exploder":

            case "Gospler Glider Run":

    private void gliderChosen() {
        // todo implement action handler.

    private void smallExploderChosen() {
        // todo implement action handler.

    private void randomChosen() {
        // todo implement action handler.

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