It is not effective to add a new static synchronized method in a subclass that attempts to protect static fields declared in a superclass.

通过在子类中增加一个静态同步方法来试图保护父类中的静态成员变量是无效的。

youdao

It is not effective to add a new static synchronized method in a subclass that attempts to protect static fields declared in a superclass.

通过在子类中增加一个静态同步方法来试图保护父类中的静态成员变量是无效的。

youdao