如何定义文件的相对路径？

Question

I have a project with cucumber and maven, work from Intellij IDEA.

I need to use a relative file path. Now I am working on mac os, but then the project will also be used on windows.

1. How do I determine the relative path from RunnerTest.java to application.properties file for mac os?
2. Will there be any differences in defining the same path for Windows?

Here is my RunnerTest.Java Class

public class RunnerTest {

    public static void main(String[] args) throws Throwable {
        System.setProperty("TagConfigFile", "../../config/application.properties");

        //...

        String sConfigFile = System.getProperty("TagConfigFile", "null");

        try (InputStream streamFromResources = Props.class.getClassLoader().getResourceAsStream(sConfigFile)) {
            /* work wiht  streamFromResources */
        } catch (IOException | NullPointerException ee) {
            throw new PropsRuntimeException("Failed to access properties file", ee);
        }
    }
}

Here is the image of my project structure (for clarity, added highlighting):

I tried to use such ways. But it did not help

 1. "../../config/application.properties"
 2. "src/resources/config/application.properties"
 3. "../../resources/config/application.properties"

Answer 1

I do not pretend to be correct, but it worked:

1. I created the folder resources in src -> main and moved the folder config there. I created the folder resources in src -> test and moved the all other folders there. The result is such a structure:

src
 |----main
 |      |
 |      |----java
 |      |----resources
 |      |        |----config
 |      |        |       |----application.properties
 |
 |----test
 |      |----resources
 |      |        |----features
 |      |        |----pipes
 |      |        |----testdata
 |      |        |----webdrivers

2. Instead System.setProperty("TagConfigFile", "../../config/application.properties"); I wrote System.setProperty("TagConfigFile", "./config/application.properties"); in RunnerTest.java class

If someone offers a more beautiful working solution, I will be very glad