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C. SubC SuperC
While admittedly a little convoluted, this is another relatively straightforward application of method overloading using types from the classhierarchy.
Type SubC , SuperC , or Object?
This method defines a class named SuperC , which extends Object , and a class named SubC , which extends SuperC . Therefore, an object instantiated from the class named SubC can be treated as any of the following types: SubC , SuperC , or Object .
Two overloaded methods in different classes
Two overloaded methods named overLoadMthd are defined in two classes in the inheritance hierarchy. The class named SuperC defines a version that requires an incoming parameter of type SuperC . The class named SubC defines a version that requires an incoming parameter of type SubC . When called, each of these overloaded methods prints the type of its formal argument.
Two objects of type SubC
The program instantiates two objects of the SubC class, storing the reference to one of them in a reference variable of type SubC , and storing the reference to the other in a reference variable of type SuperC .
Call the overloaded method twice
The next step is to call the overloaded method named overLoadMthd twice in succession, passing each of the reference variables of type SubC and SuperC to the method.
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