java 什么是从另一个对象访问的受保护方法访问级别
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What is protected method access level with regard to accessing from another object
提问by blue-sky
I'm passing an object reference to a Util class. I'm attempting to invoke a protected method on the Util class but I getting a compile time error -
我将对象引用传递给 Util 类。我试图在 Util 类上调用受保护的方法，但出现编译时错误 -
The method setPositionChild(Field, int, int) from the type Manager is not visible
To invoke a protected method is it required to be in the implementing class only ? Can I not pass the reference to an external class and invoke the reference from there ?
要调用受保护的方法是否只需要在实现类中？我不能将引用传递给外部类并从那里调用引用吗？
