并发容器Queue - ConcurrentLinkedQueue和ConcurrentLinkedDeque
1.ConcurrentLinkedQueue1.1官方文档Anunboundedthread-safequeuebasedonlinkednodes.ThisqueueorderselementsFIFO(first-in-first-out).Theheadofthequeueisthatelementthathasbeenonthequeuethelongesttime.Thetailoft