Web Reference: This class and its iterator implement all of the optional methods of the Collection and Iterator interfaces. This class is a member of the Java Collections Framework. Dec 10, 2018 · The java.util.ArrayDeque.pollFirst () method in Java is used to retrieve or fetch and remove the first element of the Deque. The peekFirst () method only retrieved the first element but the pollFirst () also removes the element along with the retrieval. One of the most useful methods in the ArrayDeque class is the pollFirst () method. This method allows developers to retrieve and remove the first element from the deque.
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