Fission theory. Fission Theory-A theory for the origin of the Moon in which the Moon consists of matter that was flung from the primitive Earth because of the Earth 's rapid rotation ...
Method overloading is the example of compile time polymorphism. Method overriding is the example of run time polymorphism. In java, method overloading can't be performed by changing return type of the method only. Return type can be same or different in method overloading.
Creating the method in a derived class with same name, same parameters and same return type as in base class is called as method overriding. Method overriding is the example of run time polymorphism,how its is the part of run time polymorphism i will explain in detail.