Now that you have spent three days exploring how object-oriented programming is implemented in Java, you’re in a better position to decide how useful it can be in your programming.
If you are a “glass half empty” kind of person, object-oriented programming (OOP) is a level of abstraction that gets in the way of using a programming language. You learn more about why OOP is thoroughly ingrained in Java in the coming days and may change your mind.
If you are a “glass half full” kind of person, object-oriented programming is beneficial because of its benefits: improved reliability, reusability, and maintenance.
Today you learned how to deal with objects: creating them, reading their values and changing them, and calling their methods. You also learned how to cast objects from one class to another, cast to and from primitive data types and classes, and take advantage of automatic conversions through autoboxing and unboxing.