Do declare static classes as sealed and abstract, and add a private instance constructor, if your programming language does not have built-in support for static classes.

如果编程语言没有对静态类的内置支持，则应将静态类声明为密封的和抽象的，并添加一个私有实例构造函数。

youdao

Do declare static classes as sealed and abstract, and add a private instance constructor, if your programming language does not have built-in support for static classes.

如果编程语言没有对静态类的内置支持，则应将静态类声明为密封的和抽象的，并添加一个私有实例构造函数。

youdao