The java.util.concurrent.ConcurrentLinkedDeque.offer() method is an inbuilt method in Java which inserts the specified element, passed as a parameter, to the deque.
public boolean offer(E elem)
Parameters: The method accepts a parameter elem which species the element to be inserted to the deque.
Return Value: The function returns True if the element is successfully added into the deque and returns False otherwise.
Exception: The function throws a NullPointerException if the passed parameter is NULL.
Below programs illustrate the ConcurrentLinkedDeque.offer() method:
ConcurrentLinkedDeque: [Welcome, To, Geeks, 4, Geeks] Element Inserted ConcurrentLinkedDeque: [Welcome, To, Geeks, 4, Geeks, GFG]
ConcurrentLinkedDeque: [Welcome, To, Geeks, 4, Geeks] java.lang.NullPointerException
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