scheduler class

• 调度程序类

scheduler class的用法和样例：

例句

1. The plug-in utility class would listen for events from this button.
   插件实用程序类将侦听来自这个按钮的事件。
2. Our application class instantiates the Frame object we just designed, renders it to the screen, and sets it as the top-most window of our application.
   我们的应用程序类实例化了一个刚才设计的框架对象，把它绘制在屏幕上，并设置成程序的顶层窗口。