How to add an integer element to ArrayList of wildcards in Generics?

Question

I have a ArrayList generic wildcards type, which is taking Number as extends. I am trying to add the integer values to the ArrayList.

Buts it\'s giving me an error

Answer 1

You can't add a Integer to the list because maybe it is a list of Float, and not a list of Integer.

You can do:

ArrayList numberList = new ArrayList();
numberList.add(100);

or just

ArrayList numberList = new ArrayList();
numberList.add(100);