Question

After copying over the files you created in problem 1 , you will improve upon that model by implementing a few new methods in both the SkiHill and SkiRun classes to allow for runs to be open or closed so that the ski patrol can do their job! First, you must add the following instance variable to the SkiRun object class: runIsopen : boolean This boolean instance variable will be set to true if the fun is open and false if the run is closed. Thanks to polymorphism, once you've set this up for your SkiRun class, all subclasses (EasyRun, MediumRun, and HardRun) all have access to this superclass variable as well!

Answer 1

To implement the new feature, a boolean instance variable named 'runIsOpen' should be added to the SkiRun class to represent the state of a ski run. Doing so would enable the subclasses of SkiRun, such as EasyRun, MediumRun, and HardRun to inherit this variable and thereby allow for the monitoring of ski run states for patrol operations.

Step-by-step explanation:

The question is asking about enhancing a programming project by adding new functionality to manage the state of ski runs within a given model, specifically within a SkiHill application.

This involves the use of object-oriented programming (OOP) concepts such as instance variables, inheritance, and polymorphism.

By adding a boolean instance variable to the SkiRun class, you can track whether a ski run is open or closed.

Since EasyRun, MediumRun, and HardRun are subclasses of SkiRun, they inherit this variable. This would allow ski patrol and the ski hill administration to easily open or close runs as needed and have that information be accessible across all types of runs within the programming model.