Java Static and Dynamic Binding, Overloading

Question

I am practicing for a test and I came across this exercise about overloading and static and dynamic binding. The output of the following code is asked:

class         


        

Answer 1

Here is what's going on:

stooge1.print(new Moe()); // All three have overload for Moe,
// so the overload from the dynamic type of stooge1 gets called
stooge1.print(new Curly()); // Compiler thinks stooge1 is Larry,
// so it does not know that it has an overload for Curly.
// It uses the overload for Larry instead, because Curly is a Larry
stooge1.print(new Larry()); // Same logic as above applies.
stooge2.print(new Curly()); // Compiler thinks stooge2 is Moe, so its only overload
// is for Moe. Since the dynamic type is Larry, first overload is invoked

The remaining three cases can be solved by applying the same logic as above.