用Java 简单的实现聊天室功能，采用的Socket TCP 单播技术，其他还有很多有待完善的地方-Simple implementation with a Java chat room feature, use the Socket TCP unicast technology, there are many other areas to be improved

Java编写的小型聊天室系统，实现了网络中的TCP协议内容。-this is a chatroom system that is completed by java.

java SE版的简单聊天室，实现了群聊，私聊，上传下载，查看聊天记录，修改密码等功能。(Java SE version of a simple chat room, has realized the group chat, private chat and upload download, view the chat logs, change passwords, and other functions.)