java get first element of arraylist by index

/**
 * @author lautturi.com 
 * Java example: access element of arraylist
 */

import java.util.*;
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class Lautturi {

	public static void main(String[] args) {

		ArrayList<Integer> arrlist = new ArrayList<Integer>();
		arrlist.add(3);
		arrlist.add(7);
		arrlist.add(15);
		arrlist.add(8);
		arrlist.add(22);
		arrlist.add(12);
		System.out.println("ArrayList: "+arrlist);
		System.out.println(arrlist.get(0));
	}

}

output:

ArrayList: [3, 7, 15, 8, 22, 12]
3