Foo.java

        //regular customer
        class Customer {
            private String name;
            String getName() {
                return name;
            }
            boolean canCancelDispatchedOrder() {
                return false;
            }
        }

        //In case valid user isn't logged in
        class GuestCustomer extends Customer{
            @Override
            String getName() {
                return "Anonymous";
            }
        }

        //Customer for special order cancelling to use by support team
        class SuperUserCustomer extends Customer {
            @Override
            boolean canCancelDispatchedOrder() {
                return true;
            }
        }

        //hides our inheritance tree complexity and helps to construct appropriate
        //object as needed
        class CustomerFactory {
            Customer getCustomer(Context context){
                //[...]
                return customer;
            }
        }