[文档]Java面试题大全V2.0.doc

注意，为了节省大家的时间，提高学习效率，一些过时的知识点和被测试概率极低的话题不再收录和分析。
回答问题的思路：先正面描述一些基本的核心知识，然后描述一些特殊的东西，最后是锦上添花。注意一些不是锦上添花，而是画蛇添足的东西，不要随便写。像写书一样写下你的答案。我想回答一个新技术问题的大致思路和步骤是：我们想做什么，怎么做，在做的过程中遇到了什么问题，现在用什么方法来解决。其实我们的讲课也是这样。
比如在说ajax的时候，我们希望不要改变原来的整个网页，而只是改变网页中的部分内容，比如用户名验证、级联下拉列表、下拉树形菜单。传统方式，浏览器自己直接向服务器发送请求，服务器返回新页面覆盖旧页面，不流畅。

(Note that in order to save time and improve learning efficiency, some outdated knowledge points and topics with a very low probability of being tested are no longer included and analyzed.
Ideas for answering questions: first describe some basic core knowledge, then describe some special things, and finally add icing on the cake. Pay attention to some things that are not icing on the cake, but are icing on the cake. Don't write them casually. Write down your answers like a book. The general idea and steps I want to answer a new technical question are: what we want to do, how we do it, what problems we encounter in the process of doing it, and what methods we use to solve them. In fact, our lectures are the same.
For example, in the case of Ajax, we hope not to change the original entire web page, but only some contents of the web page, such as user name authentication, cascading drop-down lists, and drop-down tree menus. In the traditional way, the browser directly sends a request to the server, and the server returns a new page to cover the old page, which is not smooth.)

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