array sum and average

import java.util.*;
public class ArrayDemo{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        double average=0.0,sum=0.0;
        System.out.println("Enter the size");
        int size=sc.nextInt();
        int[] marks=new int[size];
        System.out.println("Enter " +size+"marks");
        for(int i=0;i<marks.length;i++){
            marks[i]=sc.nextInt();
            sum+=marks[i];
        }
         average=sum/size;
        System.out.println("Arrays elements are"+Arrays.toString(marks));
        System.out.println("SUM="+sum);
        System.out.println("Average ="+average);
    }
}