calculate average from arraylist in java

/**
 * @author lautturi.com
 * Java example:calculate the average of array list elements in java
 */

import java.util.*;
import java.time.*;
import java.io.*;

public class Lautturi {

	public static void main(String[] args) {
		ArrayList<Integer> data = new ArrayList<Integer>();
		data.add(1);
		data.add(3);
		data.add(8);
		data.add(6);
		double avg = 0.0;
		double total = 0;
		for(int i = 0; i<data.size(); i++) {
		    total = total + data.get(i);
		}
		avg = total / data.size();
		System.out.println("The Sum IS:" + total);
		System.out.println("The Average IS:" + avg);

	}

}

output:

The Sum IS:18.0
The Average IS:4.5