How to create child class with parant reference with java reflection and without switch

I have a class A which is parant of classes AB, AC, AD. Also class A have enum field "type" which can be "A" \ "AB" \ "AC" \ "AD". So, how can i replace this switch with java reflections?

       public A f(A aa){
           A a;
           switch (aa.type){
                    case A:
                        a = new A();
                        break;
                    case AB:
                        a = new AB();
                        break;
                    case AC:
                        a = new AC();
                        break;
                    case AD:
                        a = new AD();
                        break;
            }
        }
    ```