Java throwing NullPointerException when loading Images using getClass().getResource()

Question

I have an Applet I'm trying to embed into a html file after packaging into a jar file.

Images are loaded in the main Applet Class with the following line

return getImage(getClass().getResource("/../content/"+path));

This works when running through eclipse but when I export it to a jar file I get a Null Pointer Exception. I've done some googling and I've tried to use getResourceAsStream with the following code

InputStream is = new BufferedInputStream(
                 getClass().getResourceAsStream("/../content/"+path));
return ImageIO.read(is);

but this doesn't work through eclipse.

Content is the top level directory of the images and path is the specified path to the required image. The applet is in a folder called game, which is at the same level as content

try putting the content into the same package as the class thats accessing the content and change the paths accordingly and see if that helps. If it does, its a problem with your paths... — David Kroukamp, Jun 17 '12 at 16:25
Thought so I see that if the resources are in their own path and package, but not in the current package, it never works out! even when you try go back a directory — David Kroukamp, Jun 17 '12 at 16:32
This [thread](http://stackoverflow.com/questions/9864267/load-icon-image-exception/9866659#9866659) might can put more light on the topic :-) — nIcE cOw, Jun 18 '12 at 04:07

David Kroukamp · Answer 1 · 2012-06-17T16:44:55.060

3

It was a comment now i answered it here (as OP said it did help): try putting the content into the same package as the class thats accessing the content and change the paths accordingly and see if that helps. If it does, its a problem with your paths.

edited Jun 17 '12 at 16:44

answered Jun 17 '12 at 16:33

David Kroukamp

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score 0 · Answer 2 · answered Oct 03 '13 at 16:38

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I had the same issue. But solved it using :-

<ClassName>.class.getClass().getResource(urlString);

Hope this helps...

answered Oct 03 '13 at 16:38

Robin

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score 0 · Answer 3 · answered Oct 03 '13 at 16:52

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You could try this instead.

getClass().getClassLoader().getResourceAsStream(name)

Also, your path looks a bit weird. /.. basically means the parent directory of the root, which cannot possibly work.

answered Oct 03 '13 at 16:52

Jilles van Gurp

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Java throwing NullPointerException when loading Images using getClass().getResource()

3 Answers3