Place and retrieve images Java 3d

[master74]

I have no working experience of Java3d what so ever so I needed a quick informationwhere should I place images that I want to use in my project like the background of the panel like we have Drawable folder in android.and also I have seen that the background need the image as ImageComponent2d how to convert that retrieved image to that format searched for it all around but no good tutorial was available Any help is appreciated thanks in advace