Guys just starting to delve into programming, what am I doing wrong in this code?

Question

Java

I need to fill an array of 15 elements with random numbers, what am I doing wrong here? Why is the array filled in order from 0 to 15?
packagecom.company;
import java.util.Random;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
int[] mas =new int[15];
Random rand = new Random();
for (int i = 0; i < mas.length; i++) {
mas[i] = rand.nextInt();
System.out.println(i);
}
}
}

Answer 1

replace
with
System.out.println(mas[i]);