el juego de la verda

sample_Controller.java

package sample;
import javafx.scene.control.Button;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;

import java.util.Random;

public class Controller {

    public Button nop;
    public Button sipi;
    public WebView popo;
    public WebEngine web;

    public void initialize() {
        System.out.println("toy in");
        web = popo.getEngine();
        web.load("http://seb.cl");
    }
    public void dentro() {
        nop.setLayoutX((new Random()).nextInt(480));
        nop.setLayoutY((new Random()).nextInt(180));
    }
}

sample_Main.java

package sample;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class Main extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception{
        Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
        primaryStage.setTitle("El juego de la verdá");
        primaryStage.setScene(new Scene(root));
        primaryStage.show();
    }


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

sample_sample.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import java.lang.*?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.*?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.text.*?>
<?import javafx.scene.web.*?>

<AnchorPane prefHeight="327.0" prefWidth="503.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="sample.Controller">
  <children>
    <Text layoutX="185.0" layoutY="49.0" scaleX="2.0266173748347347" scaleY="2.3157266965811343" strokeType="OUTSIDE" strokeWidth="0.0" text="Te gusta el pico?" />
    <Button fx:id="sipi" layoutX="92.0" layoutY="108.0" mnemonicParsing="false" prefHeight="29.0" prefWidth="109.0" text="Sipo" />
    <Button fx:id="nop" layoutX="313.0" layoutY="108.0" mnemonicParsing="false" onMouseEntered="#dentro" prefHeight="29.0" prefWidth="109.0" text="No poh weon" />
    <WebView fx:id="popo" layoutX="64.0" layoutY="160.0" prefHeight="111.0" prefWidth="321.0"  />
  </children>
</AnchorPane>