【正文】 畢業(yè)設計（論文）外文參考文獻翻譯 計算機科學與信息工程系 系（院） 2020 屆 題 目 企 業(yè) 即 時 通 Instant Messaging for Enterprises 課題類型 技術開發(fā) 課題來源 自 選 學生姓名 許帥 專業(yè)班 級 04 計算機科學與技術 指導老師 王占中 職 稱 工程師 完成日期： 2020 年 4 月 6 日 目 錄 INSTANT MESSAGING FOR ENTERPRISE .................................. 1 1. Tips ............................................................................................................................................ 1 2. Introduction ............................................................................................................................... 1 3. First things first ......................................................................................................................... 2 WhileAccept loop .............................................................................................................. 4 5. PerThread class ........................................................................................................................ 6 6. The Client class ......................................................................................................................... 7 企業(yè)即時通 ..................................................... 9 ..................................................................... 9 ..................................................................... 9 ............................................................ 10 ................................................................ 11 ................................................................ 13 ................................................................ 14 1 Instant Messaging for Enterprise 1. Tips If Java is, in fact, yet another puter programming language, you may question why it is so important and why it is being promoted as a revolutionary step in puter programming. The answer isn’t immediately obvious if you’re ing from a traditional programming perspective. Although Java is very useful for solving traditional standalone programming problems, it is also important because it will solve programming problems on the World Wide Web. What is the Web? The Web can seem a bit of a mystery at first, with all this talk of “surfing,” “ presence,” and “home pages.” It’s helpful to step back and see what it really is, but to do this you must understand client/server systems, another aspect of puting that is full of confusing issues. The primary idea of a client/server system is that you have a central repository of information， some kind of data, often in a database。 That you can distribute on demand to some set of people or machines. The basic concept of client/server puting, then, is not so plicated. The problems arise because you have a single server trying to serve many clients at once. Building a java chat server Should I take this tutorial? in this tutorial, we will build both the server and client sides of a simple chat system this tutorial is for someone with little or no experience doing working programming. We’ll cover topics such as working and multithreading in enough detail so that you39。ll be able to follow the examples, even if you have little or no experience doing this kind of programming. You will, however, need to be familiar with basic objectoriented programming in the Java language. In this tutorial, you39。ll build a simple, centralized, connectionoriented Java server. In doing so, you39。ll learn a basic framework that you can use when creating such a server, using timehonored techniques that work well in many situations. 2. Introduction We39。ll also examine some of the limitations of this framework and explore ways of getting around them. What is a connectionoriented server? Generally speaking, the job of any server is to provide a centralized service. However, there are many 2 different ways of providing services, and many different ways to structure the munications. Chat is roughly described as a connectionoriented service, because a user establishes a connection and maintains that connection, sending and receiving text for the duration of the session. We39。ll be creating a strippeddown, connectionoriented server. Learning the basic framework will help you a great deal in creating other connectionoriented servers in the future. Why create from scratch? In creating this prototype server, we39。ll be using nothing more than the basic packages built into every Java implementation. This allows us to explore server programming at the very lowest level possible in the Java language. There are certainly many systems available that can take care of many of these working details for you. In many cases, the best realworld solution is to use an existing framework, because it often