Overriding Methods

 ///Subclasses can override instance methods (including operators), getters, and setters.

///You can use the @override annotation to indicate that you are intentionally overriding a member.

void main() {
  var obj = B();
  obj.display();
}
class A {

  @override
  void display() {
    print("CLASS A");
  }
}
class B extends A {

  @override
  void display() {
    super.display();  //  Accessing Super class(parent class) method in sub class(child class) using "super" keyword
    print("CLASS B");
  }
}

///Advantages of super keyword:
// It can be used to access the data members of parent class when both parent and child have member with same name.
// It is used to prevent overriding the parent method.
// It can be used to call parameterized constructor of parent class.
///Syntax:
// // To access parent class variables
// super.variable_name;
// // To access parent class method
// super.method_name();