import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ListView;
import javafx.scene.control.ToolBar;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;

public class Main extends Application {        
    public static void main(String[] args) {        
        Application.launch(args);
    }
    
    @Override 
    public void start(Stage stage) {
      
        stage.setHeight(300.0);
        stage.setWidth(400.0);
        
        Scene scene = new Scene(new Group());
        
        AnchorPane pane = new AnchorPane();
        
        ToolBar tb = new ToolBar();
        tb.setPrefHeight(60);
        
        final ListView<String> lv = new ListView<String>();
        
        Button b = new Button("Add to list");
        b.setOnAction(new EventHandler<ActionEvent>() {
            public void handle(ActionEvent e) {
                lv.getItems().add("Item");
                //lv.scrollTo(lv.getItems().size() - 1); // Comment this line out to prevent the scrollbar from getting messed up
            }
        });
        
        Button b2 = new Button("Scroll to end");
        b2.setOnAction(new EventHandler<ActionEvent>() {
            public void handle(ActionEvent e) {
                // Note that this won't work unless you comment out the other call to scrollTo
                lv.scrollTo(lv.getItems().size() - 1);
            }
        });
        
        tb.getItems().addAll(b, b2);
        
        AnchorPane.setLeftAnchor(tb, 0.0);
        AnchorPane.setRightAnchor(tb, 0.0);
        AnchorPane.setTopAnchor(tb, 0.0);                
        
        AnchorPane.setTopAnchor(lv, 60.0);
        AnchorPane.setRightAnchor(lv, 0.0);
        AnchorPane.setLeftAnchor(lv, 0.0);
        AnchorPane.setBottomAnchor(lv, 0.0);

        pane.getChildren().addAll(tb, lv);
        
        scene.setRoot(pane);
        
        stage.setScene(scene);           
        stage.setVisible(true);       
    }      
}