读取与类相同目录的配置文件返回null

Question

I am not sure why I cannot read my configuration file which is in the same level as my class. I have tried both code below but both inputstreams are null.

public MyClass
    public void getConfigurations()
    {
        String fileName = "myFile.conf";

        InputStream in = this.getClass().getResourceAsStream(fileName);
        InputStream inNew = this.getClass().getClassLoader().getResourceAsStream(fileName);
        System.out.println(in);
        System.out.println(inNew);
    }
    public static void main(String[] arg){
        MyClass myClass = new MyClass();
        myClass.getConfigurations();
    }
}

The output is:

null
null

Here is my directory

MyProject
    -src
        -com
            -test
                -MyClass.java
                -myFile.conf
    -lib

I am going to package this class into an executable jar file so I would like it to work in both windows and linux. When I package the jar file, I want the configuration file to be on the same level as my class.

Did I miss something?

Answer 1

If you don't use absolute path (path beginning with / ), in this situation you cannot get your file location.

Because you execute .class file, not the .java file. If you build your class in another folder, with relative path, your path is based on where the .class file is.

Try to put class file in the same dir as java files. I guess now you put them in build folder.

Or, try to get them like /src/com/test . This is absolute path.