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Java Collections - ArrayBlockingQueue.poll() Examples

Java Collections Java Java API 


Class:

java.util.concurrent.ArrayBlockingQueue

java.lang.Objectjava.lang.Objectjava.util.AbstractCollectionjava.util.AbstractCollectionjava.util.CollectionCollectionjava.util.AbstractQueuejava.util.AbstractQueuejava.util.QueueQueuejava.util.concurrent.ArrayBlockingQueuejava.util.concurrent.ArrayBlockingQueuejava.util.concurrent.BlockingQueueBlockingQueuejava.io.SerializableSerializableLogicBig

Method:

E poll()

Retrieves and removes the head of this queue, or returns null if this queue is empty.


Examples


package com.logicbig.example.arrayblockingqueue;

import java.util.Arrays;
import java.util.concurrent.ArrayBlockingQueue;

public class PollExample {

public static void main(String... args) {
ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(3, true,
Arrays.asList(1, 2, 3));
System.out.println("queue: " + q);
Integer i = q.poll();
System.out.println(i);
i = q.poll();
System.out.println(i);
i = q.poll();
System.out.println(i);
i = q.poll();
System.out.println(i);
}
}

Output

queue: [1, 2, 3]
1
2
3
null




See Also