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However, whether this is a war remains to be discussed. In the simplest sense, the act of cyber war is defined as an attack by one country on another country's digital infrastructure.For example, in Java, the Selector's select () method is used to implement this synchronous blocking operation waiting for an event to occur. In the implementation of select () under Linux operating system, a) will call epollCtl (epfd, opcode, fd, events) to register the events that have been registered in Initiation Dispatcher into Linux system, where fd means Handle and events means Handle events that we are interested in; B) Synchronize the occurrence of a blocked wait registered event by calling the epollWait method. Events on different event sources may occur at the same time. Once an event is triggered, the epollWait method will return. C) Finally, find the associated SelectorKeyImpl object by the event that occurred, set the event that occurred to the ready state, and then put the SelectorKeyImpl into the selectedSet. In this way, we can get the event-ready SelectorKeyImpl collection through the Selector.selectedKeys () method.运动全能的中学女汉子韩梅梅，各项成绩尚可，但一提起英语就头疼得要命。元帅？萧公角失声惊呼。徐郎……女人看着和尚，血液中同样产生了某种脉动，这就是她爱上他的地方，可是，这个目标，这也许太不现实了，说到底，我们只剩下了一万多人……就算取下，守得住么？那是后话。字数超过限制, 部分内容不再显示出来.敌人的敌人就是朋友，现如今于尹旭而言，他们彼此都有着共同的敌人项羽，所以有合作的基础。