the this : the representative of the current object references, who will call me, I who represents
Super : represents the current object reference to the parent class
Use of the difference between this and super
A : Call to a member variable
this. member variable call this class member variables, member variables can also call the parent class
super. member variables to call the parent class member variables
B : call the constructor method
the this (...); class constructor calls this method
Super (...); call the constructor of the superclass / super (actual parameters);
C : Call to a member method
this. This method calls the members of the class member method, you can also call the parent's method
super. members call the method of the parent class members