Question

I have a generic class A, and I’m in a method where I have to create an instance of A based on the class the given object is. That is, I have:

public void (Object obj) {
  Class<?> c = obj.getClass();
  A<c> = ...;
}

However, on the third line Eclipse says that c cannot be resolved to a type. When I remove the generic parameter, I get “A is a raw type. References to generic type A should be parameterized.”

What would be the correct way to go here?

Thanks.

Answer 1

public <C> void (Object B) {
  Class<C> c = B.getClass();
  A<C> a = ...;
}

or even better

public <C> void (C B) {
  Class<C> c = B.getClass();
  A<C> a = ...;
}

or if you just need the Class

public <C> void (Class<C> clazz) {
  A<C> a = ...;
}