说明：  运用java2D绘图技术所写的导航平台，里面有任务可供用户操作，登录用户名为admin，密码为admin，想学习java绘图技术的朋友赶紧下了，运行前需要安装jdk6.0
(Written using java2D graphics navigation platform, which has the task for the user operation, log the user name admin, password is admin, want to learn java graphics friend got off, and run before the need to install jdk6.0)