Question 58 Quiz B in master exam of K&B

[Sanjay Singhaniya]

It has a line mentioning
Arrays.asList(16,8,42,15,4,23)

I am getting compiler error on this stmt. But the answer to the question is not "compilation fails".
I have attached the screenshot.
Please explain.

[Stephen Davies]

You are correct, the code compiles and prnts 42. I suppose it is an error.

import java.util.*;


public class PQ {
	
	public static void main(String[] args) {
		
		Comparator<Integer> cmp = new Comparator<Integer>(){
			
			public int compare(Integer n1,Integer n2){
				return n2.compareTo(n1);
			}
		};
			PriorityQueue<Integer> q= new PriorityQueue<Integer>(100,cmp);
			q.addAll(Arrays.asList(16,8,42,15,4,23));
			System.out.println(q.poll());
		}
		
	}