有java编写的邮件管理系统，结构比较简单，一看就会。-E-mail management system written in Java, the relatively simple structure, a look will be.

简单的OA协同办公系统，简单的实现了用户管理、部门管理、岗位管理以及论坛相关的功能.(Simple OA collaborative office system, simple implementation of user management, department management, post management and forum related functions.)