此程序是用JAVA写的FTP服务器端.在virtualroots设置FTP根目录，config设置FTP端口，users保存用户登陆帐号.-this program is written in Java FTP server. FTP virtualroots installed in the root directory, config set up FTP port, users keep users landing account.

一个基于Java编写的Socket程序，提供简单的FTP功能实现 This networking program set consists of implementation of FTP, TELNET, HTTP SERVER, UDP NEWS SERVER, Multi client parallel chat server, Date server. Knowledge of socket programming, applet, AWT, thread, and IO str