My Image isnt showing up , why ?

Question

I tried changing things, but i have no idea what to do now.. javadoc is all in HTML/javascript Code, i dont get why...
Heres The Code, please help me :
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package mostraimagem;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javafx.scene.image.Image;
import javafx.scene.*;
import javafx.scene.image.ImageView;
import javafx.scene.layout.GridPane;
* @author André
public class MostraImagem extends Application {
    public static String URL;
    //public static ImageView iv;
    public static Image image;
    public static void main(String[] args) {
        launch(args);
    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Hello World!");
        StackPane root = new StackPane();
        primaryStage.setScene(new Scene(root, 300, 250));
        primaryStage.show();
        GridPane grid = new GridPane();
        grid.setHgap(2);
        grid.setHgap(2);
        grid.setVgap(2);
        root.getChildren().add(grid);
        URL = "Lighthouse.jpg";
        Image im = new Image(URL);
        ImageView iv = new ImageView(im);
        iv.setVisible(true);
        grid.add(iv,1,5);
}

Answer 1

Still Doesnt work! Thanks for the anwer!!! But i still need help!!
Here are the pictures of the netbeans project and folders :
http://imageshack.us/photo/my-images/96/netbeansproject.jpg/
http://imageshack.us/photo/my-images/17/netbeansproject.jpg/
* To change this template, choose Tools | Templates
* and open the template in the editor.
package mostraimagem;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javafx.scene.image.Image;
import javafx.scene.*;
import javafx.scene.image.ImageView;
import javafx.scene.layout.GridPane;
* @author André
public class MostraImagem extends Application {
    public static String URL;
    //public static ImageView iv;
    public static Image image;
    public static void main(String[] args) {
        launch(args);
    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Hello World!");
        StackPane root = new StackPane();
        primaryStage.setScene(new Scene(root, 300, 250));
        primaryStage.show();
        GridPane grid = new GridPane();
        grid.setHgap(2);
        grid.setHgap(2);
        grid.setVgap(2);
        root.getChildren().add(grid);
        URL = "Lighthouse.jpg";
        Image im = new Image(MostraImagem .class.getClassLoader().getResourceAsStream("Lighthouse.jpg"));
        ImageView iv = new ImageView(im);
        iv.setVisible(true);
        grid.add(iv,1,5);
}