I am having a bit of a problem with my code and that it always throws `NullPointerException`:

```
public class WhateverResource extends ServerResource {
    @Get("json")
    public Representation represent(){
        InputStream is =  getContext().getClass().getClassLoader().getResourceAsStream("/whatever.properties");
        Properties props = new Properties();
        try {
            props.load(is); // NPE here!
            String whatever = props.getProperty("whatever_key");
            setStatus(Status.SUCCESS_OK);
        } catch (IOException e) {
            e.printStackTrace();
            setStatus(Status.SERVER_ERROR_INTERNAL);
        }
        return new StringRepresentation(props.toString());
    }
}

```

I've check the genererated WAR file and in the target folder there is that `properties` file under `WEB-INF` folder. What could be wrong with this code?