Question

Queue<Integer> qu = new LinkedList<>();  qu.add(1);  qu.add(2);  qu.add(3);  qu.poll();  qu.poll();  System.out.println("The first element is: "+qu.peek()); What is output of code?
The first element is: 2
The first element is: 1
The first element is: 0
The first element is: 3

Answer 1

The first element is: 3