Ìîäóëü: Java. ArrayList

import java.util.ArrayList;
import java.util.Scanner;
public class Main
{
    public static void main(String[] args) {
        int n;
        Scanner in = new Scanner(System.in);
        n = in.nextInt();       

 for (Integer a: arr)
              {
                System.out.print(a+" ");
        }
    }
}