ListView Focus

Main.java

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.ListView;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;

public class Main extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception{
        HBox group = new HBox();
        ObservableList items = FXCollections.observableArrayList("abc", "def", "ghi", "xyz");
        ListView<String> listView1 = new ListView<String>(items);
        ListView<String> listView2 = new ListView<String>(items);
        listView1.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, newValue) -> {
            System.out.println("ListView1 - " + newValue.toString());
            System.out.println("ListView2 - " + listView2.getSelectionModel().getSelectedItem());
        });
        listView2.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, newValue) -> {
            System.out.println("ListView2 - " + newValue.toString());
            System.out.println("ListView1 - " + listView1.getSelectionModel().getSelectedItem());
        });
        group.getChildren().addAll(listView1, listView2);
        primaryStage.setTitle("ListView Focus");
        primaryStage.setScene(new Scene(group, 300, 275));
        primaryStage.show();
    }

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

An example for SO question - https://stackoverflow.com/questions/28641559/how-does-the-behaviour-of-a-listview-work