BeanWrapperImpl - copy relationships

I have an entity with relationships. I am trying to copy the properties from entity to my bean. I tried using BeanWrapperImpl but unable to get the list values, could copy only simple types. As per the below class i get only obj1 value but not obj2 which is inturn a list of other class objects. How can i get all the values into other bean at one go?

My class is something like below.

Class A{
String obj1;
List<Object2> obj2;

}