css - JavaFX 8 Scene BackgroundImage -

i actual problem set background image scene. tried in different ways:

public void btn_create_event() throws ioexception, exception{         stage curstage = (stage) config_btn.getscene().getwindow();         stage stage = new stage();         fieldlayercontroller flc = new fieldlayercontroller(); //        flc.buildfield("seeschlacht_background.jpg");         flc.buildfield();         flc.buildscene();         flc.buildcamera(); //        string image = fieldlayercontroller.class.getresource("seeschlacht_background.jpg").toexternalform();  //        flc.root.setstyle("-fx-background-image: url('" + image + "'); " //                + "-fx-background-position: center center; " //                + "-fx-background-repeat: stretch;" //                + "-fx-background-color:transparent;" //        ); //        flc.root.setstyle("-fx-background-image: url('seeschlacht_background.jpg')");         scene scene = new scene(flc.root, 1024, 768, true); //        scene.getstylesheets().addall(this.getclass().getresource("seeschlacht.css").toexternalform());         flc.handlekeyboard(scene, (node)flc.world);         flc.handlemouse(scene, (node)flc.world);         scene.setcamera(flc.camera);         stage.setscene(scene);         stage.show();         curstage.close();     } 

these methode fieldlayercontroller ncessary build window:

public void buildscene() {     system.out.println("buildscene");     root.getchildren().add(world); }  public void buildfield(){      final phongmaterial redmaterial = new phongmaterial();     redmaterial.setdiffusecolor(color.darkred);     redmaterial.setspecularcolor(color.red);      final phongmaterial whitematerial = new phongmaterial();     whitematerial.setdiffusecolor(color.white);     whitematerial.setspecularcolor(color.lightblue);      final phongmaterial greymaterial = new phongmaterial();     greymaterial.setdiffusecolor(color.green);     greymaterial.setspecularcolor(color.darkgreen);      final phongmaterial lightgreymaterial = new phongmaterial();     greymaterial.setdiffusecolor(color.lightgrey);     greymaterial.setspecularcolor(color.grey);      //image img = new image(img_path);     //backgroundimage back_img = new backgroundimage(img, backgroundrepeat.repeat, backgroundrepeat.repeat, backgroundposition.default, backgroundsize.default);      graficform fieldgrafikform = new graficform();     graficform areagrafikform = new graficform();      arraylist<box> ab = new arraylist<box>();      (int x = -2; x < 2; x++) {         (int z = -2; z < 2; z++) {             box box = new box(50, 0, 50);             box.setid("x" + (x + 2));             box.settranslatex(x + 25 + (x * 50));             box.settranslatez(z + 25 + (z * 50));             if ((x % 2 == 0 & z % 2 != 0) | (x % 2 != 0 & z % 2 == 0)) {                 box.setmaterial(redmaterial);             } else {                 box.setmaterial(lightgreymaterial);             }             ab.add(box);         }     }      fieldgrafikform.getchildren().add(areagrafikform);     areagrafikform.getchildren().addall(ab);     battlefieldgroup.getchildren().add(fieldgrafikform);      world.getchildren().addall(battlefieldgroup); } 

so can set external img file (the file in same path of other files , css-file too) window create fieldlayercontroller?

using javafx 8 , netbeans 8. read threads topic here in stackoverflow:

• => javafx display scene background image
• => javafx how set scene background image
• => javafx set external background image programmatically

and on...