How do I put numbers in a generic list?

So I made a generic list and it will only accept Strings if I cast them as (T). Here’s my code:

package dz06;

import java.util.ArrayList;
import java.util.List;

    public class Exersise04<T> {

        public static void main(String[] args) {

            new Exersise04();

        }

        public Exersise04(){

            List<T> list = new ArrayList<>();

            list.add((T)"Hello");
            list.add((T)25);

        }

    }

This gives me an error when I want to add the int 25 even if I cast it as (T). If it’s a generic list shouldn’t it take whatever I give it? Please help, thanks in advance

Answer

You cannot cast primitive int to (T), try cast an Integer to (T)

list.add((T)((Integer)25));

(You can cast primitive int to Integer like ((Integer)25) because of automatic boxing.)