说明：  完全是自己用Java编写的可以发送文件的聊天软件，是自己的课程设计项目，绝对可以正常运行。可以扫描在线用户、文字聊天、和彼此发送文件。源代码附有详细解释！
(Their use is entirely written in Java chat software can send documents, curriculum design their own projects, absolutely normal operation. Online users can scan, text chat, and send files to each other. Source code with detailed explanation!)