Accessing Base Class Members
If a derived class has the same named member
as the base class
It can be accessed by using the super keyword.
If we have a “cleanup” type function to be executed at
the end of an object’s lifetime, it would need to use
the super keyword to invoke it’s base class’s (I
recommend that you first cleanup your derived class
prior to invoking the base class’ cleanup
public class ordered_list extends list {
public void member() {
   super.member();  //calls base class member
}
}