java网络编程，实现简单的聊天室功能，可以看见在线用户，进行连接配置。-java network programming, the realization of a simple chat room feature, you can see online users connect configuration.

java聊天室，具有群聊、私聊、文件传送等功能-java chat rooms, with a group chat, private chat, file transfer and other functions