Is there an error with this code ?? The list.toArray() part

Question

List <Integer> list = new ArrayList <Integer> ();
Scanner input = new Scanner(System.in);
while(input.hasNextInt())
list.add(input.nextInt());

int arr[] = new int[list.size()];
arr = list.toArray(arr);

Answer 1

Make the following change:
Integer arr[] = new Integer[list.size()];

Because, toArray() is a generic method and it can take array of non-primitive type. (Just like you can't declare an ArrayList of type int).
int is primitive and Integer is non-primitive, so it should work this way :)

Answer 2

Ah. the int array must be of type Integer.

Answer 3

I don't see one just by looking at it. You could copy and paste it into a compiler and see for yourself. 😜

Answer 4

yeah that was it 😃 thanks alot 😍

Answer 5

i compiled it and got an error i didn't understand about the syntax i guess but i searched about it and got nothing