D > B enters the synchronized block, and since instance is not null at this time, it immediately leaves the synchronized block and returns the result to the program calling the method. E > At this point, thread B intends to use the Singleton instance, only to find that it has not been initialized, so an error occurs. Therefore, there is still the possibility of errors in the program. In fact, the running process of the program is very complicated. From this, we can see that it is more difficult and challenging to write programs especially in multi-threaded environment. We further optimized the program:
Responsibility chain mode-A request needs multiple objects to process, thus avoiding the coupling relationship between the sender and receiver of the request. Connect these objects into a chain and pass the request along this chain until an object processes it. The specific structure diagram is as follows:
Listener stored by listenerBank
比起围城的现状，他更加在意的是英布的表现。
After withdrawing from the Red Mansions Dream League, Gu Xiqian did not withdraw from the network in the first place, but ordered an energy card for him under the urging of the mecha Zhinao, which climbed out of the cockpit. Yes...
Lins' Concubine 11
1. The default opening failed because the service card did not receive the reply short message from SP vendor on time.
National key cultural relics protection units, the first batch of 4A tourist attractions in the country. Located in the west street of the city, it was built in 686, the second year of Tang Wu Zetian's vertical arch, formerly known as "Lotus Temple". In 738 A.D., Tang Xuanzong ordered all states in the country to build a Kaiyuan Temple, which was changed to its current name. The whole temple covers an area of 78,000 square meters. It is large in scale, spectacular in construction and beautiful in scenery. It was once as famous as Baima Temple in Luoyang, Lingyin Temple in Hangzhou and Guangji Temple in Beijing. There are mainly buildings such as the Main Hall of the Great Hero, the Ganlu Ring Altar, and the East and West Pagodas.
著名企业家武蜀勤之子李波罗拒绝走子承母业的人生，多次出格反叛，母子关系几近冰点。李波罗送好兄弟潘东君报考村官之际，邂逅心仪的女孩秋云，在爱情的冲动下李波罗走上村官之路，跟主管村官招考工作的秋云打赌要做出一番事业。因其母内定的未来媳妇儿、青梅竹马的张倩倩从中作梗，李波罗和秋云的情感误会迭出，秋云死在地震中，李波罗也自此消沉。干练且个性十足的女孩赵默出现，在公推直选中脱颖而出，李波罗也在赵默睿智巧妙的连番激将下再次振作起来，和潘东君及其他村官一起，终于做出一番令其母刮目相看的事业，同时李波罗也收获了他跟赵默的爱情。
几分钟看完柯南剧场版
There are eleven behavioral patterns (13-23): policy pattern, template method pattern, observer pattern, iterative sub-pattern, responsibility chain pattern, command pattern, memo pattern, state pattern, visitor pattern, intermediary pattern and interpreter pattern.
东环市公安局重案队正在庆祝“清网行动”取得重大胜利：将一名负案在逃多年的嫌疑人捕获归案。突然得知发生了惊人血案，一名公安民警被歹徒偷袭致重伤，身上的枪和子弹被抢走。公安局立刻派出重案队全力侦破，上级机关也派刑侦副处长高林前来督导破案。高林会同重案队长洪顺达及从重案队调走的派出所干警许毅共同组成专案组。这三人是警校同学，生活中又有着千丝万缕的联系。他们克服了生活中相互之间的种种误会，与案犯斗智斗勇，经过大量的侦查，许毅发现案犯孙志军的父亲曾被自己的父亲抓捕入狱，确定这次是其报复作案。三人及专案组立刻全力对孙进行追捕，通过斗智斗勇的多次较量，终将其围困在山野间，经激烈枪战，临近退休的干警老丁则在紧急关头为保护许毅中弹牺牲。最后许毅亲手将孙志军击毙，成功破获此案。
这样她才会觉得你待她最好……李长明听妻子对儿子传授经验，听着听着觉得不对劲。
宋庆龄是上个世纪具有世界广泛影响的重要历史人物，她为中国的民主革命奋斗终生，是中华人民共和国的缔造者之一，伟大的爱国主义，民主主义、和平主义和共产主义战士。她还在童年的时候，就认识了民主革命的伟大先行者孙中山先生，并以他为偶像，萌生了革命的志向。她从美国留学归来，正逢民主革命遭受严重的挫折，处在最艰难的时候，她毅然抛弃一切，投身革命，追随孙中山先生出生入死，南征北战，在血雨腥风的战争年代，救治慰问伤病员。她不顾自身安危两次智救孙中山脱险，并协助孙中山完成革命理论的撰写。在孙中山屡遭挫败对革命前途深感茫然之际，她及时协助他实行联俄、联共、扶助农工的新方针，推进了中国民主革命的深入发展。孙中山逝世后，在蒋介石发动“四·一二”叛变后，她团结国民党内的左派与蒋介石之流进行了殊死的斗争，并与投向蒋介石反动政权的宋氏家族彻底决裂。随后她出访苏联，旅居柏林，潜修马克思主义，认清了中国革命唯一的希望在中国共产党。此后，她坚定不移追随中国共产党，在白色恐怖下，她积极开展社会活动，组建“中国民权保障同盟会
魔术师山田奈绪子（仲间由纪惠饰）和物理学家上田次郎（阿部宽饰）共同揭穿“超能力”的真相的故事。
我现在就去看看。
B. Women:-49KG,-57KG,-67KG, + 67KG
那狼是他们养的，我家的黑狗撵狼，他们就把狗射死了。
The life of Tracey and the mishaps of her neighbourhood, friends and family. Oh, and obvs her boyfriend!
