采用Java编程语言，设计合理的类，分别扮演模型（Model）、视图(View)和控制器（Controller）的角色。编写图形界面的程序，展示这三个角色，观察三种角色间的相互关系。-Using Java programming language, designed categories, and to play a model (Model), view (View) and controller (Controller) roles. Procedures for the preparation of a graphical interface to display these three roles, the three observed the relationship between the role.