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What Is The Advantage of OOP?

You will get varying answers to this question depending on whom you ask. Major advantages of OOP are:
  • Simplicity: software objects model real world objects, so the complexity is reduced and the program structure is very clear;
  • Modularity: each object forms a separate entity whose internal workings are decoupled from other parts of the system;
  • Modifiability: it is easy to make minor changes in the data representation or the procedures in an OO program. Changes inside a class do not affect any other part of a program, since the only public interface that the external world has to a class is through the use of methods;
  • Extensibility: adding new features or responding to changing operating environments can be solved by introducing a few new objects and modifying some existing ones;
  • Maintainability: objects can be maintained separately, making locating and fixing problems easier;
  • Re-usability: objects can be reused in different programs
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