（1）掌握Java Swing组件的使用方法。

（2）理解委托事件处理模型。

（3）设计具有图形用户界面的、能够响应事件的Java应用程序

-(1) to master the use of Java Swing components.

(2) understanding commissioned event handling model.

Java application (3) having a graphical user interface design, able to respond to the event