????2.LinkedBlockingQueue??????????????????У??ArrayListBlockingQueue????????????????????????????У????????????????з????????????????л???????????л??????????????????????????????????????????е????л?????????????????????LinkedBlockingQueue??????????????????????????????????????У?????????????????????????????????????????????????ж????????????????
????3.DelayQueue?? DelayQueue?????????????Delayed?????Delayed???????????????????getDelay(TimeUnit unit)?????????????????????????compareTo(Delayed o)??????????????????????????棬?????queue.take()?????????????????????????????????????????run()?е?????
????4.PriorityBlockingQueue?? ??????????????????У?????????ж???????????????Compator?????????????????????????PriorityBlockingQueue??????????????????????????????п??????????????????????????????????????????????????????????????????????????????????????????????????????????????е??????????
????5.PriorityQueue?????????????????С?
????17.?г?????????
????1.ThreadPoolExecutor?????Executors????????????????????????????????????
????2.ScheduledThreadPoolExecutor?????????????????????????????????
????18.???????java??????
????1.???????????????????????(?????????????????)
????2.Java???????????java?????????(JMM)??JMM?????????????????????д??????????????????????
????3.?????A???????????????????????????????????????????????????????????????????????A?????????????????????У???????B??????ж?????A????????????
????19.???????java??????????
????1.????long??double???????????????????????????????????????д???????
????2.java1.5??????volatile??????????long??double???????????????????
????3.????????????????????????
????20.???????volatile???
????1.???????java????????????????volatile???????????????????????????????????б?????????????????????????
????2.????????????????????????????????????volatile???Ч??
????3.???volatile???????synchronized???????????????????????????????????synchronized??
????21.???????synchronized???
????1.synchronized???????????η?????????????????synchronized???ε?????????????????????????????????????????synchronized???ε??????????????????????????????????????????synchronized???ε?????????á?
????2.?????????????????synchronized???????????????????????????к????????(??м?????)??
????3.??????????λ?????????????????????synchronized?????е????????????????synchronized???????????????????????2????????synchronized????????????????????????????synchronized??????????????????
????4.?????????????(???????Class???????)??????synchronized static????????Χ?????static?????????????
????22.Lock?????
????1.??lock()??unlock()??????????????????????????????????????????????????????
????2.????????????????????????????return??????try???棬??????????????????
????3.???Lock??????????????????Щ?????????synchronized????????????????????????
????23.wait()??sleep()????
????1.?÷?????Object?У????????????????????synchronized???????У????wait??????????????????????????????????????????wait()????????????
????2.?÷?????????Thread???С?sleep()????????????????????????????ó?cpu??????????????????????????
????24.??????????????
????1.???????????????????????
????2.??????????????????????????????????????
????3.???????????
????4.????????????