public static void main(String[] args) {
        Object o = new Object() { public String s(String name) { return "Hello, " + name; } };
            try {
                System.out.println(((String) o.getClass().getDeclaredMethod("s", String.class).invoke(o, "Dennis")));
            } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException
                    | NoSuchMethodException | SecurityException e) {
                e.printStackTrace();
            }
    }