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说明：  一个操作系统的课程设计，主要是利用Java编写的，期间用到了数据库技术(An operating system, curriculum design, mainly using Java, during the use of database technology)

這是屬於BBQ EA，可供想學習交易程式的人學習(This is part of BBQ EA, trading program for people who want to learn to learn)

运用java对系泊系统的参数进行计算，建立算法模型。(The parameters of mooring system are calculated by Java, and the algorithm model is established.)

ViewPager的滑动，以及图标的变动，(ViewPager use)

使用户可以添加node，Edges，并且应用一些sorting算法(allows user to add, delete, and move node and edges in graph data structure and play with sorting algorithms)

麦咖啡升级中心，升级时直接运行此软件，链接至网络即可，不必再到官网下载，节省大量时间。(escalation center, upgrade the software run directly, link to the network and not network officials then downloaded, save a lot of time.)

可以实现贪吃蛇小游戏的基本操作，重回儿时记忆(The basic operation of the snake game can be realized)

说明：  本系统是基于java开发的聊天室。服务端和客户端可以发送和接收消息，由于未写出服务端窗口，聊天记录只会在输出的窗口显示。如果服务器还未启动，客户端不能利用聊天室发消息。若在运行过程中服务器断开，系统会有提示。(This system is a chat room based on java. Both the server and the client can send and receive messages. Since the server window is not written out, the chat record will only be displayed in the output window. If the server has not been started, the client can not use the chat room to send messages. If the server is disconnected during operation, the system will be prompted.)

java实现电子日历，可以实现万年历的功能。(java for electronic calendars, calendar function can be achieved.)

实现用户登录界面，方便用户查找自己的信息。节省时间。(To realize the user login interface, convenient for user to find their own information. To save time. )