What is the difference between peek(), poll() and remove() method of the Queue interface?

Difference between peek(), poll() and remove() method of the Queue interface

	poll()	remove()	peek()
Action	Remove the head object of Queue.	Remove the head object of Queue.	Retrieves but does not remove the head of the Queue.
Queue is null.	poll() method will return null.	remove() method will throw NoSuchElementException.	poll() method will return null.