【文章內(nèi)容簡(jiǎn)介】 hread class inheritance to create multiple threads. Development of the puter work programming to the basic knowledge, such as the TCP / IP protocol, client / server mode ( Client / Server mode), work programming design method. Network programming in the information read, send, is the use of flow to achieve information exchange, which is introduced to implement a systematic analysis of information flow, including some basic software engineering methods. Through the analysis of these cases, the LAN chat tools using Eclipse as the basic development environment and Java language preparation, first in a short period of time can build up the system application prototype, then, for the initial prototype system, revises and the improvement unceasingly, at the same time, multithreading, task design, developed a stable performance, fully functional the server. The plete implementation of the function of the system. Through this graduation design can be learned about the application and implementation of objectoriented methods, how to use the Eclipse integrated development environment to create and development projects, thus the plete realization of the function of the system. KEY WORDS:Java chat room ,application program ,development environment super vision in lar ge and m edium goods vehicle. 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Fr om M ay 1 up, a is im plem ented plex r oad and bad weather dr iving exam, cur rent ly DMV is ur ged cont r act ors part y in t r easur es dr iving school incr eased simulat ion Highway, and cont inuous ur gent detour s, and snow days, and wet sliding r oad, and burst sit uat ion disposal, subj ect s I I f ield t o dr iving exam pr oj ect , is expect ed II 基于 Java 聊天室的設(shè)計(jì)與實(shí)現(xiàn) 摘 要 計(jì)算機(jī)網(wǎng)絡(luò)技術(shù)的快速發(fā)展， 使人們可選擇的交流方式越來(lái)越多 ，傳統(tǒng)的通信方式在速度和可靠性方面已經(jīng)很難滿(mǎn)足人們的需 要，即時(shí)通信系統(tǒng)已成為人們的新寵也是人們生活中不可或缺的一部分。 即時(shí)通信即 指信息的發(fā)布者與信息的接收者幾乎同時(shí)達(dá)到傳送要求，延遲很小的系統(tǒng)工具。如常用的 工具， 飛信， MSN 等通訊系統(tǒng)工具。 該系統(tǒng)開(kāi)發(fā)主要包括一個(gè)網(wǎng)絡(luò)聊天服務(wù)器程序和一個(gè)網(wǎng)絡(luò)聊天客戶(hù)程序兩個(gè)方面。前者通過(guò) Socket 套接字建立服務(wù)器，服務(wù)器能讀取、轉(zhuǎn)發(fā)客戶(hù)端發(fā)來(lái)信息，并能刷新用戶(hù) 列表。后者通過(guò)與服務(wù)器建立連接，來(lái)進(jìn)行客戶(hù)端與客戶(hù)端的信息交流。其中用到了局域網(wǎng)通信機(jī)制的原理，通過(guò)直接繼承 Thread 類(lèi)來(lái)建立多線(xiàn)程。開(kāi)發(fā)中利用了計(jì)算機(jī)網(wǎng)絡(luò)編程的基本理論知識(shí) ,如 TCP/IP 協(xié)議、客戶(hù)端 /服務(wù)器端模式（ Client/Server 模式）、網(wǎng)絡(luò)編程的設(shè)計(jì)方法等。在網(wǎng)絡(luò)編程中對(duì)信息的讀取、發(fā)送，是利用流來(lái)實(shí)現(xiàn)信息的交換，其中介紹了對(duì)實(shí)現(xiàn)一個(gè)系統(tǒng)的信息流的分析，包含了一些基本的軟件工程的方法。經(jīng)過(guò)分析這些情況，該局域網(wǎng)聊天工具采用 Eclipse 為基本開(kāi)發(fā)環(huán)境和 Java 語(yǔ)言進(jìn)行編寫(xiě)，首先可在短時(shí)間內(nèi) 建立系統(tǒng)應(yīng)用原型，然后，對(duì)初始原型系統(tǒng)進(jìn)行不斷修正和改進(jìn)，同時(shí)，采用多線(xiàn)程、多任務(wù)的設(shè)計(jì)思想，開(kāi)發(fā)出性能穩(wěn)定，功能全面的服務(wù)器。完整的實(shí)現(xiàn)系統(tǒng)的功能。通過(guò)本次畢業(yè)設(shè)計(jì)可以學(xué)到如何應(yīng)用和實(shí)現(xiàn)面向?qū)ο蟮母鞣N方法，如何使用 Eclipse 集成開(kāi)發(fā)環(huán)境來(lái)創(chuàng)建和開(kāi)發(fā)項(xiàng)目，從而完整的實(shí)現(xiàn) 整個(gè) 系統(tǒng)的功能。 本系統(tǒng)結(jié)構(gòu)設(shè)計(jì)合理，功能齊全 ,采用模塊化設(shè)計(jì)、操作簡(jiǎn)單，具有良好的人機(jī)界面和靈活的系統(tǒng)可維護(hù)性； 可以實(shí)現(xiàn)簡(jiǎn)單的功能如注冊(cè)、登陸、查找好友、聊天等功能。并且服務(wù)端實(shí)現(xiàn)配置文件設(shè)置、用戶(hù)管理、日志顯示等功能。 關(guān)鍵詞： 聊天室 ，應(yīng)用程序，開(kāi)發(fā)環(huán)境 super vision in lar ge and m edium goods vehicle. A is est ablished lar ge vehicles and sm al vehicles classif icat ion m anagem ent of m ot or vehicle t est m ode, incr eased m edium van car , and danger ous goods t r anspor t car ,