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胡钧瞥了她一眼，低声道：不碍事，我伤好多了。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.ALT + MUP Extraction ContourLet's continue to use the monomer mode to implement a pop-up demo;. Let's not discuss the use of single mode to achieve, we want to see how we usually write code to achieve the pop-up effect; For example, we have a pop-up window, which is definitely hidden by default. When I click, it needs to be displayed. Write the following code:67岁的小学老师文英终于熬到退休了，而退休后的生活却不如她想的那样悠闲。四个儿女有各自的生活烦恼，而文英在一次医院检查被告知只剩下了最后半年的生命。她列出自己的遗愿清单，决定瞒着所有儿女，开始按照自己清单去体验自己以前从未体验过的事物。在这个过程中，她逐渐发现儿女们还有着许多让她割舍不下的担忧，她不得不将属于自己的遗愿逐个划去，换上儿女的问题。儿女们得知母亲的病情，发现了遗愿清单，决定不在母亲面前揭穿真相，想办法帮助母亲完成属于母亲自己的心愿。母亲逐渐也明白儿女们都已经知道了自己的病情。当双方都不得不面对临终的现实，母亲和儿女都对彼此有了重新的认识，这种认识也带动了身边的其他人，进一步认清亲情的重要及生命的可贵。Expansion:不是诗词，也不是曲赋，也不像文章，都是大白话，还是俗而又俗的大白话。