Java find out all devisor of a number

/**
 * @author lautturi.com
 * Java example:find out all devisor of a number in java
 */

import java.util.*;

public class Lautturi {

	public static ArrayList<Integer> getDivisors(int n){
	    ArrayList<Integer> divisors = new ArrayList<>();
	    //without 1 or n
	    for (int i = 2; i * i <= n; ++i)
	        if (n % i == 0) {
	            divisors.add(i);
	            if (i != n / i) divisors.add(n / i);
	        }
	    return divisors;
	}
	
	public static void main(String[] args) {
		int num = 12;
		ArrayList result = getDivisors(num);
	    
	    System.out.println("result:"+result);
        
	}

}

output:

result:[2, 6, 3, 4]