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?
a.The first element is: 2
b.The first element is: 1
c.The first element is: 0
d.The first element is: 3

Answer 1

a. The first element is: 2