使用Java实现，主要技术栈为JavaSE+MySQL+JDBC+连接池（Druid）
有两个界面，初始界面和二级菜单界面。
在初始界面可以进行注册、登录和退出系统，部署了数据库，可以一直保存注册和登录信息。
登录成功后进入二级菜单，可以查看餐桌状态、预订餐桌、显示菜品名称、点菜、结账和退出功能，如果用餐了但是没有结账则无法使用退出功能。
java版本为jdk17
......
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