Once you've created a frame for your application, you can begin to add the widgets that allow the user to interact with your application.

一旦已经为您的应用程序创建了一个框架，就可以开始添加窗口部件以允许用户与您的应用程序进行交互。

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For example, if your singleton Frame is meant as a global user interface for your application and two are created, your application will have two Frames on the screen — quite confusing for the user.

举例来讲，如果作为应用程序的全局用户界面的单实例框架被创建了两个，应用程序就会在屏幕上显示两个框架——这会使用户感到非常纠结。

youdao

For example, if your singleton Frame is meant as a global user interface for your application and two are created, your application will have two Frames on the screen — quite confusing for the user.

举例来讲，如果作为应用程序的全局用户界面的单实例框架被创建了两个，应用程序就会在屏幕上显示两个框架——这会使用户感到非常纠结。

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