In this chapter, you learned how to use all the features included in Python, C#, and JavaScript in order to write simple and complex object-oriented code. We can even refactor existing code to take advantage of object-oriented programming in order to prepare the code for future requirements, reduce maintenance costs, and maximize code reuse.

Once you start working with object-oriented code and follow its best practices, it is difficult to stop writing code that works with objects. Objects are everywhere in real-life situations; therefore, it makes sense to code plenty of objects.

Now that you have learned to write object-oriented code, you are ready to use everything you learned in real-life applications that will not only rock, but also maximize code reuse and simplify maintenance.