Object-oriented programming gives us modifiers, which control the visibility of members and methods. In some languages, like Java , we have modifiers such as private and public .

An introduction to the principles of object-oriented programming. It covers both object-oriented programming techniques and their application to program design including classes, objects and objects ...

Proponents of object-oriented techniques point to the flexibility and extensibility of object-oriented systems along with other benefits such as increased modularity, abstraction, and encapsulation.