Initialize an array with an enhanced for loop

Question

I have a problem with this code , I want to Initialize an array with an enhanced for loop but i have a different result than what i was expecting;
public class Main {
public static void main(String[] args) {
int arr[]=new int [4];
int i= 0;
for (int x : arr) {
arr[x]=i;
i++;
}
for (int j = 0; j < 4; j++) {
System.out.println(arr[j]);
}
}
}
the result was
3
0
0
0

Answer 1

arr[i] = i; should work, I also think a normal for loop would be better

Answer 2

i agree with TurtleShell here, doing this results in only the first element getting assigned to as arr[x] will always be 0 since the array is not initialized with values.