Read properies file in META-INF from a jar

Question

I am trying access a properties file in a library. The problem is that the file is located in the META-INF folder of the application which is using my library. I am currently using:

private static final String CONFIG_FILE = "config.properties";

private Properties getConfigFile(){
    InputStream input = null;
    Properties config = new Properties();
    input = this.getClass().getResourceAsStream(CONFIG_FILE);
    if(input == null){
        System.out.println("*****************************************INPUT NULL DEST**************************************");
        return null;
    }
    try {
        config.load(input);
        return config;
    } catch (IOException io) {
        if(input!=null){
            try {
                input.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return config;
}`

But withoud any success. I have tried to rename the constant to "META-INF/config.properties" and still getting null.