FileUtils.java

 public static String path(Class clazz) {
        try {
            File tmp = new File(clazz.getProtectionDomain().getCodeSource().getLocation().toURI().getPath());
            String ext = tmp.getName();
            if (ext.contains(".jar")) {
                String p = tmp.toString();
                p = p.substring(0, p.lastIndexOf(File.separator));

                return p + File.separator;

            } else {
                return p;
            }

        } catch (URISyntaxException e) {
            e.printStackTrace();
        }
        return null;
    }