Initializing an array after the declaration

Question

Why we cannot use array intializer after declaring an variable.

For example:

int arr[];
arr = {1,2,3,4};

But,

int arr[] = {1,2,3,4}; 

is correct. Is there any way to use array initialize after declaring an variable.

Answer 1

This is how you can.

int arr[];

arr = new int[]{1, 2, 3, 4};