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:
You can see the difference between the modified and the pre-modified, As shown in the following figure: Three, the problem in the experiment Question 1: At first, when I chose the experimental website, I chose the rebate website. It is also a website that does not need to enter a verification code to log in: but when I intercepted the page login information, I found that the website did not respond to the login key I pressed and did not make any jump, so I did not intercept any login information. Is this the defensive measure taken by the website to prevent replay attacks? What is the principle? Question 2: I don't think the interception and use of BurpSuite software is very successful. If it is really used as an attack method, I think it is too easy to be discovered by the attacker, or what is wrong with my use?
既然她认识范依兰，还有断水颇有渊源，尹旭不想也不会为难她。
当第三季开始的时候，击败斯坦尼斯·拜拉席恩大军的蓝尼斯特家族进一步巩固了对君临城的统治，但北方之王罗柏·史塔克仍然在向南推进。他控制着许多原本属于君临城的土地，并且至今未尝败绩。
樊哙性格素来有些倔强，这会子更是嘟着嘴巴，有些不大情愿
After handcuffing the man, Wang Jiying dug up a wallet on him and found three bank cards in the wallet. Wang Jiying asked the man what the bank card password was. The man did not say at first. Wang Jiying kicked him and stamped seven or eight feet on the man's chest. The man said a password. Wang Jiying checked it with the man's cell phone and found that the password was wrong. He kicked the man indiscriminately. At that time, I wanted to kill the man. I found a computer plug-in row in the master bedroom. I cut the wire with a dagger and tied the male master's legs with the cut wire. Wang Jiying turned and went to the small bedroom. I knew he was asking to rape the hostess. When he came, we had already discussed to rape the hostess. Wang Jiying asked me to take off the male host's trousers before leaving. I let the man sit on the sofa. After a while, I took a dagger and Fu Gang took a kitchen knife and sat on the sofa looking at the man. After sitting for about ten minutes, I was thinking about killing this guy, It is convenient to do things in the bedroom. I took this guy to the big bedroom, Before entering the big bedroom, I went to the small bedroom to have a look. Wang Jiying was lying on the bed of the small bedroom. The hostess knelt on the bed for him * river crab * and Zhao Mou stood by to watch. However, the hostess was still dressed at this time. After watching, I went to the big bedroom. After entering the big bedroom, I untied the wire for the man's leggings and took off his trousers. I asked Fu Gang if he could stir-fry. Fu Gang said he could stir-fry, so he went to stir-fry. I looked at the man in the master bedroom. The man sat on the bed and begged me for mercy.
在决定命运的一天之中，堕落腐败的企业家及其名流妻子争分夺秒解救二人的女儿，防止她遭臭名昭著的黑帮老大伤害。
In theory, a crown number has only one birthday number, and the crown number is very limited. There are countless people born on the same day in China, so this kind of resource is relatively rare and will not be available once sold. Therefore, please contact us to inform you of the birthday number you are looking for before purchasing. We will search our birthday number library to see if it has not been sold yet. Therefore, we must hurry up! This set of birthday notes is suitable for wedding commemorations, birthday numbers, and any special memorable day.
After proxy!
总而言之，面前的景象之间颠覆了无诸对于骑兵的认知，他现在总算是知道了。
不敢……杨长帆匆匆还礼。
由于父母早逝，并称渤海三枝花的田佳敏、田佳慧、田佳韵三姐妹从小相依为命，感情深厚。老二佳慧更是一肩挑起了家庭重担，不光包办了大姐的婚姻大事，更为了三妹能在事业上站稳脚跟放弃自己钟爱的话剧舞台。时光飞逝，田氏三姐妹们的女儿们也长大成人到了谈婚论嫁的年龄。佳慧的女儿田梦个性开朗活泼，面对众多追求者，她偏偏选择了胸怀壮志，却身无分文的穷小子甘哲。虽然这一决定遭到众人的反对，但田梦已下定决心要和甘哲一起凭借自己的努力，脚踏实地的去创造属于他们的美好时代。最终，在田佳慧二十多年无音信的昔日好友、如今已是归国华侨的郝建功的帮助下，他们的梦想得以实现，二人也得到了亲友的祝福并步入了婚姻的殿堂。郝建功的出现，深埋田佳慧心底二十多年的心结得以解开，最终与郝建功鸳梦重温。
还有子婴变成了大舅哥，李由也就是是亲舅舅了如此为亲人报仇是义不容辞的事情。
未来人类科技已可以把自己「上载」到自行选择的来世，而当主角Nathan（Robbie Amell饰）英年早逝后，他被上载到由Nora负责的天堂；剧中讲述Nathan在来世里逐渐习惯自己离开所爱后的「新生活」，以及现世的Nora在这份工作上的挣扎。 Andy Allo饰演活泼，有点叛逆的现代女孩Nora，在纽约市的她得同时应付患病的父亲及严格的工作，但Nora仍然渴望着爱情。
等张杨落衙，张槐也从外边回来，一家人等吃饭的空儿，聚集在一处说闲话。
两次背主求荣……无论是面子和道义上他都不认同。
The matter of. The teacher is also looking forward to starting the work earlier.
一只小猴子因飞机坠毁独自落入亚马逊丛林中心，他要在丛林中学会生存和保护自己，他需要适应在这未知的世界，神奇的大自然充满精彩，也充斥着敌意……
《狐妖小红娘》的故事围绕人与妖之间的爱情展开。根据古典小说记载，世上有人有妖，妖会与人相恋，妖寿命千万年，人的寿命有限，人死了，妖活着。人会投胎转世，但投胎以后，不记得上辈子的爱。妖如果痴情的话，就去找狐妖“购买”一项服务，让投胎转世的人，回忆起前世的爱。狐妖红娘这一个角色就这样诞生，作品主要讲述了以红娘为职业的狐妖在为前世恋人牵红线过程当中发生的一系列有趣、神秘的故事。
他冷笑道：真是笑话。
