Overloading and rewriting--NOTE 2

A 1.java rewrite means that a method of a parent class is redefined  in a subclass, and its subclass has the same method name and parameter position and number as the parent class, so that when the method of the subclass is called, The method of the parent class is not executed. If the method is defined in the parent class as final, it cannot be overridden in a subclass.

2. Each Java class has its own constructor, and the constructor method is characterized by the same method name as the class name, which can be overloaded .

PS. The concept of overloading means that in the same Java class, there are two or more than two methods of the same name, but the number and position of the parameters are not exactly the same. For example, GetName () and getName (int index) are overloaded relationships.

Overloading and rewriting--NOTE 2