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:
In addition, the structure of the mind map is divergent, which is very beneficial to the divergent thinking and creative thinking of the brain, and it is also easy to add new content. However, if new content is added in the middle of the two lines of text notes, the traditional linear notes will become dense, and even the lines will be introduced everywhere, which is neither good-looking nor conducive to summary.
想要活命的就向前冲，杀退了赵军就能活命。
黑日组织在国际股市移走了500亿美元资金，企图用这笔资金进行恐怖活动经费并且栽赃中国。神鹰反恐特战队将计就计，启动R4行动。在杨灿、那敏、柳诗文等潜伏人员和厉剑锋带领的特战队员的完美配合下，粉碎了敌人。
望みの夢 菅野美穂 橋爪浩一
新一代青春剧《彩虹罗曼史》从失去双亲，相依为命的三个孩子讲起。通过接近真实的角色塑造，希望能引起观众共鸣，并把健康微笑献给观众。结合现实角色和不脱离大学的生活状态，认真表现社会现实。
比战斗机、坦克、枪支都便宜，
TCP state depletion attacks attempt to consume connection state tables that exist in many infrastructure components, such as load balancers, firewalls, and application servers themselves. For example, the firewall must analyze each packet to determine whether the packet is a discrete connection, the existence of an existing connection, or the end of an existing connection. Similarly, intrusion prevention systems must track status to implement signature-based packet detection and stateful protocol analysis. These devices and other stateful devices-including the equalizer-are frequently compromised by session floods or connection attacks. For example, a Sockstress attack can quickly flood the firewall's state table by opening a socket to populate the connection table.
市长为了掌控大权，对俄罗斯暴民敞开大门，很快他就发现这些俄罗斯人并不会遵守他的规则，为了牵制这些俄罗斯人，他再次向毒枭敞开了大门，而这场游戏才刚刚开始....
参加霸王。
支持小鱼儿干掉花无缺。
红椒问道：哥，啥时候娶菡姐姐进门？板栗笑眯眯地说道：估计要等年后。
Lomdao 不愿嫁给 Balam，因为她从未见过，也不知道他是什么样的人。为了获得信息，她着手实施“有效侦察”计划，即以另一個身份接近他……
帶你遊走人際關係的邊緣，慘劇成因究竟係乜？ 人與人之間嘅疏離、冷漠、無視，一一成為幫兇！ 世界每一個角落，惡性循環不斷，人類幾時先肯改過.
In the factory method mode, the factory class and the specific product class have a parallel hierarchical structure, and there is a one-to-one correspondence between them.
又想起自己当年，就是因为牵挂葫芦哥哥，才被板栗哥哥诈取得胜，可见，这人心有了牵挂，行事便无法自如。
List of winners:
《美丽的秘密》是由柯翰辰执导，由柯宜勤担任制片人，由何润东、宋茜、弦子、魏千翔等联决主演的都市爱情歌手成长励志剧。讲述了宋茜饰演的女主角被亲生母亲遗弃，长大之后误打误撞参加歌唱比赛后一鸣惊人，历经感情波折、亲情纠葛之后，逐渐变得坚强、成熟，最终收获了自己的精彩人生的故事。
高傲自负、从无败绩的王牌刑案律师柯震宇（李国毅饰），在柔道金牌教练命案的辩护中遭陷害，被检察官慕思明（谢坤达饰）起诉伪造证据而身败名裂，而落魄的他，搬进了一间神秘的老公寓...
