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:
我们全力以赴，尽快打败田荣。
《三乘合体·变形金刚GO!》是自2005年《变形金刚·银河之力》完结后,八年以来日版原创变形金刚动画的最新系列,剧情上为《变形金刚·领袖之证》的外传动画,迎接2014变形金刚三十周年的纪念作品之一.与以往不同的是这次将是以捆绑小学馆和讲谈社的两本杂志的DVD形式的OVA动画,自2013年7月起放送.主要剧情为沉睡在日本的汽车人小队·刀剑太保的武士小队和忍者小队共六位成员,为阻止巨狰狞四鬼众复活被封印的恶鬼大帝——冲云霄而被现代的少年唤醒,与巨狰狞军团战斗并保护具有神秘力量的传说圆盘.
At present, under the guidance of the Network Security Administration Bureau of the Ministry of Industry and Information Technology, CNCERT organizes provincial sub-centers, operators, security enterprises, cloud service providers, etc. to continuously carry out DDoS attack resource management, requiring all units to timely notify and process servers, computer hosts and intelligent devices found to be used for reflection attacks, and requiring operators to strengthen the fine management of false source address traffic. In addition, it is recommended that users and relevant users improve their network security awareness and security protection capabilities, update and upgrade firmware or service programs in a timely manner, repair vulnerabilities, and standardize security configuration. For servers, computer hosts and smart devices that do not need to provide public Internet services, it is recommended to directly shut down DNS, SSDP, NTP, SNMP, Chargen, Memcached and other services, or block external IP access to these service ports on firewalls or network entrances and exits. For those who need to provide services to designated IP, access control policies such as firewalls can be configured to allow authorized IP access and prohibit other IP access. In addition, some services such as Memcached can also prevent reflection attacks by changing the default service port or changing the transmission protocol type to TCP. For those who need to provide public Internet services, according to the characteristics of reflection attacks, the message traffic of specific reflection attack instructions can be monitored, identified and filtered, and the forged source IP address of reflection attacks can be monitored, identified, limited in speed, limited in flow and intercepted.
尹旭稍微愤意道：这不能作为不出兵的理由啊，我们能早到一日，巨鹿的赵**民就能多一份希望和信心，也能减少些伤亡。
失踪三年的大少爷沈书豪忽然回归，力挽狂澜，帮有名无实的妻子尚婉婷洗脱了嫌疑，粉碎了堂兄沈悦篡夺家产的阴谋，隐忍多年的沈悦不甘屈居人下，风流倜傥的外表难掩他野心勃勃的内心。然而，阻挡沈悦的并不是真正的沈书豪，他的名字叫周定一。
清优父亲过世后被大伯夏英泰从云南接回上海与大伯一家四口挤在狭小的老房子里。大伯母和堂妹珊珊对家里突然多出的不速之客清优很看不顺眼，而堂哥继栋对清段百般照顾却冷落了自己的妹妹，因此家中时有摩擦。
A hardware firewall can be set up in front of the Web server to specifically filter requests. This effect is the best, but the price is also the most expensive.
一次偶然之中，徒心平偶遇了自己失散多年的弟弟麦行直（袁伟豪 饰），得知母亲身患重病，当徒心平想要回归家庭，尽到做儿子的义务之时，才发现，自己的身份和地位使得他同理想中的平静生活之间的距离十分遥远。
O记督查王志淙（黄日华 饰）和上司陈桂（蔡国权 饰）结为搭档，共同打击罪恶，弘扬正义。然而，当王志淙出差归来之时，却发现陈桂已经离职，而接任陈桂成为自己搭档的，竟然是平日里就同自宿怨良多的国际刑警高级督察梁家伟（罗嘉良 饰），再加上他们同时喜欢上了名为方小芳（黎姿 饰）的美丽导游小姐，彼此之间的关系更是水火不容，一场没有硝烟的战争似乎正要拉开序幕。就在这个节骨眼上，王志淙的旧搭档林永泰（陈锦鸿 饰）意外回归，可是，此时的他亦麻烦缠身，陷入了感情漩涡之中无法自拔。罪犯们可没有假期，繁华的大都市中，每时每刻都在发生着犯罪行动，人心涣散的O记能否再次齐心合力？
《综艺大热门》，为三立都会台自2013年7月1日起首播的华人综艺节目，由吴宗宪、欧汉声、陈汉典、阿达、LULU主持。
Which chains can use the rules in the filter table: INPUT, FORWARD, OUTPUT
ABC宣布续订长寿喜剧《中之道 The Middle》第9季，根据Deadline指所有演员皆签下一年新约。
她忙小声对他道：瞧咱儿子，多出息。
你擅长演什么角色？演什么风格的片子？陈启又问道。
收了那些凭证再说，此事陈家和张家都不宜再插手。
所以对西楚霸王也怀了一丝感jī之心，随算不是是心腹，和项羽之间却是联系进么，唯西楚国马首是瞻。
