Create the full-size application's organizational package, interface, and class structure, even if the files do nothing more than declare the class name and the interface it implements initially.

创建完整大小应用程序的组织包、界面和类结构，即使这些文件的作用只是声明最初实现的类名称和接口。

youdao

Create the full-size application's organizational package, interface, and class structure, even if the files do nothing more than declare the class name and the interface it implements initially.

创建完整大小应用程序的组织包、界面和类结构，即使这些文件的作用只是声明最初实现的类名称和接口。

youdao