The java.util.ArrayDeque.pollLast() method in Java is used to retrieve or fetch and remove the last element of the Deque. The peekLast() method only retrieved the element at the end but the pollLast() also removes the element along with the retrieval. It returns NULL if the deque is empty.
Parameters: The method does not take any parameter.
Return Value: The method removes the last element of the Deque and returns the same. It returns NULL if the deque is empty.
Below programs illustrate the Java.util.ArrayDeque.pollLast() method:
ArrayDeque: [Welcome, To, Geeks, 4, Geeks] The last element is: Geeks ArrayDeque after operation: [Welcome, To, Geeks, 4]
ArrayDeque: [10, 15, 30, 20, 5] The element at head is: 5 ArrayDeque after operation: [10, 15, 30, 20]
Program 3: For an empty deque:
ArrayDeque:  The element at head is: null
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