我们构建了一个在线聊天系统，它集合了Java互联、多线程和SwingGUI特征，并且还用到了组播技术，它使一个应用程序能够把DatagramPacket发给一组客户。-We have built an online chat system, which brings together Java Internet, multi-threaded and SwingGUI characteristics, and also use the multicast technology, it allow

多播程序 分布式系统引论上机题，实现服务器向多个客户端同时发送消息-Distributed system in the computer, server to multiple clients at the same time send a message