基于swing，综合使用布局管理器创建并显示一个基本型的计算器界面。类的名称为MyCalculator。界面样式参考Windows中的计算器，未实现事件响应。-Based on the swing, the integrated use of layout managers to create and display a basic calculator interface. Class name is MyCalculator. Windows interface style reference to the calculator, did not achieve the incident response.