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:
When they returned to their residence after dinner, everyone talked happily about the feelings of the day. Now they were exhausted, so they took an early rest so as to have good energy to welcome the activities of the next day. We got up at 6 o'clock and went to the second stop after breakfast. For some reason, perhaps without the support of the leaders, we stayed here for more than ten minutes and handed out some leaflets. The teacher decided to divide the troops into two routes: one to Yuanqu Village and the other to Guxin Village in Guxin Town. The driver left the first group in Yuanqu Village on the way, and our second group continued to go to Guxin Village. As it was launched yesterday, we all had experience and completed the task smoothly. When the two groups arrived together, it was already over 11 o'clock, and we took a bus to the school. After a night's rest, I also got up early on the third day and took a bus to Shenze County, Shijiazhuang City. This time it was also divided into two routes. The first group went to Greater Jia Cun and our second group went to Southwest Liucun. After obtaining the consent of the local leaders and the understanding and support of the masses, we carried out the activities. Everyone had the experience of the previous two days and was already quite skilled in the publicity and investigation work, so they completed the task smoothly.
聚焦活跃在1970年代的美国连环杀手、强奸犯——“金州杀手”。他犯下至少50起入室强奸、13起谋杀，一直隐藏在黑暗中。2018年，前警察Joseph James DeAngelo被起诉，疑为这名杀手。剧名来自金州杀手威胁一名受害者的话：“你将永远开不了口，而我将消失在黑暗中。” 本剧改编自作家Michelle McNamara对金州杀手的同名纪实调查书。
《门第》讲述了一段错综复杂的婚姻生活。市井小民何春生与都市白领罗小贝，两个携带不同家庭文化的人组成婚姻，也就开始了一场以相互渗透家庭文化为背景的战争。爱情，在“门第”之下就像一个带着善意的谎言，然而只有在婚姻的博弈中互相体谅，互相关怀，携手走出“门第”差异，才能收获最终的幸福！
《破产姐妹》（2 Broke Girls）本季将引入一个新角色，她是Max和Caroline工作的餐厅里新来的服务员，狂热而幽默，喜欢《欲望都市》的一切。她有Max的精明，Caroline的时尚眼光，同时对Oleg十分痴迷。Oleg和他或许有戏……可怜的Sophie。
五少爷说不定已经找好客栈了。
Suppose the attacker is in an "interconnected" network (e.g. An Autonomous system? System), whose ISP restricts the input and output filtering of the attacker's network traffic, will be able to prevent this spoofing attack-if this method can be deployed to the correct location by the organization. This defense method of traffic input and output filtering will restrict some legitimate communications, such as the mobile IP triangular routing operation mode, so it cannot be widely deployed. IP Security Protocol (IPsec) also provides an excellent way to resist spoofing packets, but this protocol cannot be used due to deployment restrictions. Since it is usually impossible for the server side to require the ISP of the link initiator to implement address filtering or require it to use IP security protocols, more complex solutions are needed to resist this spoofing attack disguised as multiple addresses, which will be discussed later.
继今年早些时候由领先的独立制作公司Mammoth Screen制作的长篇电影获得成功后，独立电视台（ITV）推出了第二部当代侦探剧《麦当劳与多德》（McDonald&Dodds）。在新的系列片中，塔拉·古韦亚（冷脚）和英国电影电视学院获奖演员杰森·沃特金斯（克里斯托弗·杰弗里斯失去的荣誉，王冠）在三部新的谋杀案中，再次扮演雄心勃勃的DCI麦克唐纳和谦逊、低调、才华横溢的DS多德。该剧以风景如画的巴斯为背景，将最近从伦敦大都会警察局调来的狂热的DCI McDonald与谦逊谦逊的DS Dodds配对，后者在工作生涯的大部分时间里都很快乐。两人看似毫无共同之处，却结成了一种喧闹的、最终高效的犯罪解决伙伴关系。由罗伯特·墨菲（Robert Murphy）创作并执导的《麦当劳与多德》（McDonald&Dodds）将再次在西方国家拍摄。全新的剧集将由亚历克斯·皮莱（Riverdale Sabrina的惊心动魄冒险）、丽贝卡·瑞克罗夫特（Malory Towers，Danny和Mick）和伊恩·阿利耶（长远来看，安迪和乐队）执导。这部新剧集由独立电视台戏剧总监胡肯奈尔·琼斯（Huw Kennair Jones）和戏剧总监波利·希尔（Polly Hill）委托制作。Huw将从该频道的角度监督该剧的制作。Huw Kennair-Jones评论道：“我们很高兴看到观众对麦当劳和多德的第一系列的反应。这两个角色之间的距离实在太远了，这也使得这部连续剧如此引人入胜。他们不应该有化学反应，但他们有，他们的合作非常出色，这证明了罗伯特的剧本以及塔拉和杰森将麦当劳和多德带到了生活中。”猛犸象电影公司的戏剧总监评论道，Preethi Mavahalli：“今年早些时候，罗伯特·墨菲（Robert Murphy）巧妙的故事讲述在观众中大受欢迎，我们对此感到非常激动。麦当劳和多德是一支奇特独特的调查团队，由塔拉·古韦亚和杰森·沃特金斯完美地展现了生命。我们真的很高兴独立电视台委托制作了更多的电影，并期待着在巴斯重回电影圈。”Damien Timmer（奋进号、Noughts+十字架号、着火的世界）和Preethi Mavahalli（麦当劳和多德号、Noughts+十字架号、世界之战）是独立电视台制片公司Mammoth Screen的执行制片人，与作家罗伯特·墨菲（麦克唐纳和多德、维拉、设得兰、DCI银行）并肩作战。新系列的制作人是莎拉·刘易斯（维多利亚州麦克唐纳和多德的Noughts+Crosss）。第一个系列可通过流媒体平台Britbox查看。第一集以640万的综合收视率和26%的可用观众份额发行，并与塔拉·古维亚和杰森·沃特金斯一起拥有令人印象深刻的客串演员名单，其中包括罗伯特·林赛、罗莎莉·克雷格、埃莉·肯德里克、苏珊娜·菲尔丁、乔安娜·斯坎兰、米歇尔·多特里斯、弗雷迪·福克斯和休·丹尼斯。ITV工作室将在国际上发行该剧。
《我有一个梦》，讲述江南普通百姓在波澜壮阔的时代背景下面对社会动乱变迁而坚持梦想，艰苦打拼的故事。 主人公叶春儿因家庭的变故辍学后从临时工、苦力活、摆小摊开始，用辛勤的劳动和不懈的坚持，养育早逝的父母撇下的弟弟妹妹们。但是，生活总是诸多的磨难，在创业的过程中，她屡遭重创，爱情、婚姻、亲情也因各种原因出现了危机。但是在自己内心深处的那个梦想的感召下，她没有被任何困难击倒，于是在经历丈夫的意外身亡、婆婆对其的恨之入骨、亲自带大的二弟误入歧途、小妹叛逆堕落等一系列的打击下， 叶春儿选择重新站起来继续努力奋斗，几经磨难，几度风雨，叶春儿开拓了自己的事业，成为一个成功的企业家， 最终实现了自己的梦想，从而也获得了幸福的婚姻和朋友的终生友谊。
许是寺庙确实比别处不同，他很快就沉静下来。
范文轩说道：那日前去营救，邓陵多的钟隐先生自然是不会让子夜前去参与的。
People who join the IT industry are extremely intelligent, interested, creative, pragmatic and ambitious, with incomparable creativity, life and clear action goals. Quite a number of people already have humanities or business degrees and are looking for their ideals. They find that their current jobs lack challenges and development, so they decide to engage in high-challenge and high-income information industry through research.
From random import random?
Fig. 2 Combustion process
(4) Please press the power key to start the machine first. When the Apple logo will appear on the screen, do not release the power key. Then press and hold the Home key of the main screen until the screen is black. When you see the black screen on the screen, please release the power key and continue to hold down the Home key on the main screen until the mobile phone enters the recovery mode.
陈启把饭菜都端了上来。
Public Object Previous ();
是秦思雨。
郝圆、夏初、范小天、田娜，几个朝气蓬勃的青年在同一所大学里就读，常聚在一起学习，同时又因为他们对各种美食都情有独钟，围绕着学习和他们共同的兴趣爱好，逐渐成为了好朋友。
