说明：   局域网聊天程序的设计与实现 该程序实现局域网内的聊天功能，包括服务器端程序和客户端程序两部分。 客户端程序：可连接到服务器，并将消息发送到服务器端和接受服务器端发送来的信息。 课程设计可选用NetBeans、Eclipse、JBuilder等作为开发平台以提高开发效率，尽可能熟练掌握其中一种集成开发环境。建议采用UML建模技术进行系统的分析设计，在Visio中画出系统用例图和类图，并将UML图复制到设计报告中。
(LAN chat program design and implementation of the program within the local area network chat function, including the two parts of the server-side program and the client program. The client program: You can connect to the server, and send a message to the server-side and accepted the information sent by the server-side. Curriculum design can be selected as a development platform in NetBeans, Eclipse, JBuilder as proficient as possible in order to improve the efficiency of the development, an integrated development environment. Recommendations for system analysis and design using UML modeling techniques, draw use case diagrams and class diagrams in Visio and UML diagrams copied to the design report.)