Convert a generic list to an array

Question

I have searched for this, but unfortunately, I don\'t get the correct answer.

class Helper {
    public static  T[] toArray(List list) {
           


        

Answer 1

This is due to type erasure. The generics are removed in compilation, thus the Helper.toArray will be compiled into returning an Object[].

For this particular case, I suggest you use List.toArray(T[]).

String[] array = list.toArray(new String[list.size()]);