Java how to load resource in exported jar using URL

Question

I need to load a resource using a URL in a exported jar. So far I've tried this:

private Sound loadSound(String path) {
    URL url = GameSound.class.getClassLoader().getResource(path);
    Sound s = TinySound.loadSound(url);
    return s;
}

But the URL doesn't work after I export the jar. I have put my files that I need to be loaded into the src folder of my project. How can I do this?

Answer 1

The getClass().getResource(path) can use an absolute path of the form "/....". The ClassLoader.getResource(path) uses an absolute path without a leading slash: "xyz/abc/uvw`.

The other problem is using the classloader responsible for that jar. Your GameSound should best reside in the same external jar.`.

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Problem: in src it works in a jar not:

When having just one jar, check with 7zip or WinZip the file path in the jar. Especially paths in jars and on non-Windows systems are case-sensitive .

For /a/b/c/d.png one can use:

a.b.MyClass.getResource("c/d.png");
e.f.MyClass.getResource("/a/b/c/d.png");

Where MyClass resides in the same jar.

The second cause might be that the using class internally expects a file:// or http:// URL. That would simply be utterly bad API design.