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Why class A referring as object of B when class B inherit class A ?

 
Ranch Hand
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This is the java program -



The output of this code is -


Now the question is why the output from a class A constructor is indicating that this is a B object ? does whole object act like a object of B class ?

Thank you.
 
Greenhorn
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Actually, this object IS an object of type "B". Because it was instantiated by calling the constructor of type "B". And yes, it will act like an object of type "A", except the methods which were overriden in type "B". You know - DIENTIST(B) is a DOCTOR(A).
 
Marshal
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Muztaba Hasanat wrote:. . .. . ..

That is not a default constructor. You never see a default constructor.
 
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Muztaba Hasanat wrote:Now the question is why the output from a class A constructor is indicating that this is a B object ? does whole object act like a object of B class ?


I will give you a few good points to understand, but before that, I need your inputs on this. What should have been an output here according to you ?
 
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In B's no-argument constructor, since you do not explicitly invoke one of its superclass' constructors, the superclass no-argument constructor A() is called. Then the rest of the body of B() is executed
 
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