import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.ConcurrentLinkedQueue;
public class ConQueue {
    public static void main(String[] args)
    {
        ConcurrentLinkedQueue queue = new ConcurrentLinkedQueue();
        queue.offer("呵呵");
        System.out.println("offer 后,队列是否空"+queue.isEmpty());
        System.out.println("从对垒中poll"+queue.poll());
        System.out.println("poll 后,队列是否空"+queue.isEmpty());
    }
}
offer 后,队列是否空false
从对垒中poll呵呵
poll 后,队列是否空true
原文:https://www.cnblogs.com/hshy/p/14070963.html