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What is the advantage of OOP?

Answer: 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

• re-usability: objects can be reused in different programs.