My jar file won't load images

Question

I am currently writing a program that I need to send to a friend as a jar. The program has images that need to be loaded for the program to work properly and I want it all to be

Answer 1

Instead of using /./resources/back_img.png, use resources/back_img.png with ClassLoader.
Here is example :

    String path = "resources/back_img.png";
    ClassLoader cl = ImageHandler.class.getClassLoader();
    URL imgURL = cl.getResource(path);
    //URL imgURL = ImageHandler.class.getResource(path);

    if (imgURL != null) {
        ImageIcon icon = new ImageIcon(imgURL, description);
        Image img = icon.getImage();
        Image sizedImg = img.getScaledInstance(width, height, Image.SCALE_DEFAULT);
        return new ImageIcon(sizedImg);
    } else {
        System.err.println("Couldn't find file: " + path);
        return null;
    }

Answer 2

Your URL will evaluate to "/./resources/tiles/tile.png" which does not make sense (but maybe the ClassLoader that is used when you run from NetBeans tolerates the error.)
Try dropping the initial "/./". Also you do not need the references to File.separator as the string is treated as a relative URL and the forward slash is always valid.

Answer 3

Despite anything else your code has the unenviable property of being fail-slow.

Try something like

URL x = get class.getclassloader.getresource(...)
If x == null
   Throw new defect "expected ... But it wasn't there"

Sorry for the formatting, but the iPad makes it too hard to do it right.