canvas3d appearing representation window

i am attempting insert canvas3d vigilant inside representation jpanel, nonetheless formula doesn't seem operative (i.e. zero happens):

        canvas3d house = new canvas3d(simpleuniverse.getpreferredconfiguration());
        simpleuniverse star = new simpleuniverse(canvas);
        branchgroup bottom = new branchgroup();
        root.addchild(new colorcube());
        universe.addbranchgraph(root);
        universe.getviewingplatform().setnominalviewingtransform();
        canvaspanel.add(canvas);

what am i missing? jpanel combined controlling netbean's visible editor.