Inserting image into ImageView using Javafx -

i have frame controller class reading values form(which created using javafx scene builder) , inserting information after controlling validity. want know how insert image imageview element on stage.

public class framecontroller {    @fxml    private imageview img_view;    ....    @fxml    public void buttonclicked() {    ...        img_view = new imageview();      image img = new image("../img/img.jpg");      img_view.setimage(img);    ...    } } 

this not work. runs debugger after clicked button bound buttonclicked() function. missing something? how can insert image imageview element on scene? appreciate help.

something fix:

1. the relative path reference ../ not resolve url can loaded jar protocol (which standard protocol used loading resources in packaged javafx apps). don't use relative reference ..\ in it.

2. instead use absolute reference, example:

   /com/mycompany/myapp/myproject/img/img.jpg

some things check (assuming have made change above):

1. load fxml using fxmlloader.
2. in fxml have fx:controller attribute references framecontroller.
3. in fxml have imageview element defines fx:id img_view (ensure fx:id , not id).
4. understand image loading rules outlined in sergey's answer to: where javafx.scene.image.image("flower.png") flower.png?.

5. in controller, add line:

   system.out.println(framecontroller.getclass().getresource(     "/com/mycompany/myapp/myproject/img/img.jpg").toexternalform() ); 

   this print out system looking image.

6. ensure build system copying img.jpg class output directory. this, after build completes , assuming build makes jar named myapp.jar, run:

   jar xvf myapp.jar

   and see if img.jpg @ path com/mycompany/myproject/img/img.jpg.

7. after create img object, call:

   img.iserror(); 

   to see if there loading error image.