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method is not invoked only when implemented? Throughout the implementation process of the compiler , it is not related to SubClass (int n) ( do not call it off ) , how will the compiler do not go , there will be an error it? Who does not relate to ?
when the compiler generates bytecode files would be logical for the code inside other tests , whether you run do not run , you do not have a default constructor of the parent class , another subclass constructor , the compiler I will try to find the parent class , but can not find the natural error.
In other words , if there is such an error , the compiler never mind , then the programmer will miss much wrong?
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pass parameters when instantiating a ?
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right in the place where you draw the red frame , wrong on SubClass (int) method of this structure . No parent class constructor with no arguments
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method is not invoked only when implemented? Throughout the implementation process of the compiler , it is not related to SubClass (int n) ( do not call it off ) , how will the compiler do not go , there will be an error it?
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learn, cattle mighty
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unless you are allowed to use the no-argument constructor
otherwise constructor with no arguments will be written on the
is to prevent subclasses appear to find less than a no-argument constructor of the parent class
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