ClassLoader getResourceAsStream returns null

If it’s in the same package use

InputStream is = Driver.class.getResourceAsStream("myconfig.txt");

The way you have it

InputStream is = ClassLoader.getSystemClassLoader().getResourceAsStream("myconfig.txt");

It’s looking for the file in the root of the classpath. You could use

InputStream is = ClassLoader.getSystemClassLoader().getResourceAsStream("com/me/myapp/myconfig.txt");

The rules for searching are explained in the javadoc of ClassLoader#getResource(String) and the javadoc of Class#getResource(String).

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