Override and reload?

Rewrite and reload ？

1. heavy load ： Overloading occurs in the same class , If there are multiple methods with the same name in a class , But the type and number of parameters of the method are different , So this is method overloading . Overloading is independent of the return value type .
2. rewrite ： Rewriting occurs between parent and child classes , If the method in the parent class is inherited by the child class , Method name , return type , The parameters are exactly the same , But the methods are different , Then it means that the method in the parent class is overridden by the child class .