How to get files in directory of jar file in java?

Question

assume that i have this code in a project A :

public class test {
    public void myMethod() {
          String directoryPath = classLoader.getResource("") + "/templates/code/";
          // code to read directory files
    }
}

First Problem

and have some specific files in resources/templates directory of this project. and want to get all of the files that in the resources/templates directory.

I'm added that project as a dependency to another project named B and want to call myMethod .

now, the myMethod works fine when calling in project A , but when i'm call it in B project it throws FileNotFoundException .

I'm call the myMethod in project B as you seen below:

public class myClass {
    public static void main(String[] args) {
           myMethod();
    }
}

NOTE

1- Both of that projects is Spring, Maven project

2- When i build project B , the jar file of project A is in WEB-INF/lib directory of B .

Answer 1

First you could use getResource to work with files as follow :

    URL directoryPath = classLoader.getResource("resources/templates");
    File f = new File(directoryPath.getFile());

BUT, once your application is deployed as a jar, you can't access the ressources with "File" anymore. You need to read the content of the jar file.

Here's a link to help you : How do I list the files inside a JAR file?