[FIXED] JavaFX 2D Combobox

Issue

I want to make a ComboBox which will show other items when I have the mouse over a current item. Also you cannot select an item which has childs inside.

Like this:

Currently I have a ComboBox with items of a String array, but I can't understand how to put the child nodes.

Solution

This looks like a MenuButton would be a better option than a ComboBox. You can do something like this:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuButton;
import javafx.scene.control.MenuItem;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;

public class App extends Application {

    @Override
    public void start(Stage stage) {

        MenuButton menuButton = new MenuButton("Select Item");
        Label label = new Label("Selected Item: ");

        Menu subMenu = new Menu("Item 1");
        for (int i = 1 ; i <= 3 ; i++) {
            subMenu.getItems().add(createItem("Child item "+i, label));
        }
        menuButton.getItems().add(subMenu);

        for (int i = 2 ; i <= 5 ; i++) {
            menuButton.getItems().add(createItem("Item "+i, label));
        }

        BorderPane root = new BorderPane(label);
        root.setTop(menuButton);

        Scene scene = new Scene(root, 400, 400);

        stage.setScene(scene);
        stage.show();
    }

    private MenuItem createItem(String text, Label label) {
        MenuItem item = new MenuItem(text);
        item.setOnAction(e -> label.setText("Selected Item: "+text));
        return item ;
    }

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

}

Answered By - James_D