Object-Oriented Programming

By wikipedia definition, Object Oriented Progrraming is: "A programming paradigm that represents concepts as "objects" that have data fields (attributes that describe the object) and associated procedures known as methods. Objects, which are usually instances of classes, are used to interact with one another to design applications and computer programs." To make it simpler, my teacher back in highschool said the following to illusrate OOP in our minds: "OOP is just like nature itself. We are instances of Human class, our world is an instance of Planet class and so forth." On this aspect, OOP is very useful for computer programmers in sense of code repetition and convenience.