convert list of integer to array of integer in java

/**
 * @author lautturi.com 
 * Java example: convert List to Array in Java
 */

import java.util.*;

public class Lautturi {
	public static void main(String[] args) {
		List<Integer> list = new ArrayList<Integer>(); 
		list.add(3);
		list.add(7);
		list.add(15);
		list.add(8);
		list.add(22);
		list.add(12);
		
		Integer[] arr = new Integer[list.size()]; 
		arr = list.toArray(arr); 
		
		System.out.println("List:"+list);
		System.out.println("Integer array:"+Arrays.toString(arr));
	}
}

output:

List:[3, 7, 15, 8, 22, 12]
Integer array:[3, 7, 15, 8, 22, 12]