Question

I have following structure in jar

myjar.jar -> com -> MYProgram.class

       -> file.txt

In MYProgram i am trying to do:

getClass().getResourceAsStream("../file.txt")

I am getting NullpointerException when i try to read the inputstream..

Where is it going wrong ?

Answer 1

Either use

getClass().getResourceAsStream("/file.txt")

or

getClass().getClassLoader().getResourceAsStream("file.txt")

(ClassLoader.getResourceAsStream always takes an “absolute” resource name.)

I don’t believe navigating up the “directory hierarchy” works in getResourceAsStream – the path either has to be relative to the given class but without navigating back up the tree, or it has to be absolute to start with.