[CareerCup] 14.1 Private Constructor 私有构建函数 - Grandyang - 博客园



[CareerCup] 14.1 Private Constructor 私有构建函数 - Grandyang - 博客园

14.1 In terms of inheritance, what is the effect of keeping a constructor private?

 

这道题问我们用继承特性时,如果建立一个私有的构建函数会怎样。

只有能访问该函数的私有变量或函数的东西才能访问私有构建函数,比如内部类就可以访问,比如类A是类Q的一个内部类,那么Q的其他内部类可以访问类A的私有构建函数。

由于一个子类可以调用父类的构建函数,类A可以被继承,所以只有类A的子类或者是类Q的其他子类可以访问类A的私有构建函数。


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