QuipoIn

Java - Queue Overview

Which principle does a Queue in Java follow?

A. LIFO (Last In First Out) 

B. FIFO (First In First Out)  

C. Random Order 

D. Priority Based

Which Java interface defines the Queue?

A. Collection 

B. Iterator 

C. Queue  

D. List

Which of the following classes implements the Queue interface?

A. ArrayList 

B. LinkedList  

C. HashSet 

D. TreeMap

Which method retrieves and removes the head of the queue, or returns null if empty?

A. remove() 

B. peek() 

C. poll()  

D. element()

Which type of queue gives priority to elements based on natural ordering or comparator?

A. Deque 

B. PriorityQueue  

C. LinkedList Queue 

D. BlockingQueue