- public : The default permission in scala, all classes can access. But it cannot be declared explicitly .
- private : Only this class and companion objects can access.
- protect : Only this class and subclasses can be accessed, and other classes in the same package cannot be accessed.
- private[package name] : Other classes under the specified package can also be accessed.
The scope of Scala permission modifier
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Origin blog.csdn.net/FlatTiger/article/details/114441335
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