说明：  本文在介绍Java和Eclipse相关技术和国内外发展现状的基础上，对“局域网实时通讯”系统的整个生命周期的各个开发阶段进行了详细地介绍。首先，分析了开发本系统的可行性，重点分析本设计所采用的技术的可行性。
(In Java and Eclipse technologies and development status at home and abroad on the basis of the detailed description of the various development stages of the entire life cycle of the LAN real-time communication system. First, the analysis of the feasibility of the development of the system, focusing on analysis of the feasibility of the technology used in the design.)