Computer scienceProgramming languagesJavaCode organizationObject-oriented programmingClass hierarchiesBuilding class hierarchies

Referencing subclass objects

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A reference variable of a subclass can be used to refer a superclass object.

If class A is a superclass of class B and B is a superclass of class C then, a variable of class A can reference any object of class B and class C.

You cannot cast an object of a subclass to its superclass.

We can access subclass specific members through the base class reference.

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