system1为用户注册模块 system2为在线聊天系统 system3为在线投票系统 system4为在线考试系统 system5为新闻发布模块-System1 Registration module for users system2 online chat system system3 online voting system system4 online examination system system5 press releases module

用JAVA编的小型很使用的聊天窗口，一人多聊两人私聊-With JAVA is used for small chat window, a man in conversation they whisper