获取jar中的目录

Question

How to get the directory inside the jar?

Let's say I have a jar called foo.jar, how can I make the jar be able to access a file that's like this foo.jar!/text.txt , whereas the class is like foo.jar!/randomPackage/Main.class ?

I'm able to do that while still in eclipse, but then when I export the program into a jar, it doesn't work.

Answer 1

You need to use, eg, java.lang.Class.getResourceAsStream() to access the file. That will work either inside a jar or on the filesystem.

Answer 2

You have 2 main options.

1. this.getClass().getClassLoader().getResourceAsStream("some/pkg/resource.properties");

2. this.getClass().getResourceAsStream.("/some/pkg/resource.properties");

I just posted this more full post on it recently, getResourceAsStream returns null