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 .

Becoming popular in the early 1990s and the norm today, object-oriented programming (OOP) languages, such as C++ and Java, provide a formal set of rules for creating and managing objects.

The Java programming language emerged roughly 25 years ago, when Smalltalk and C++ dominated. Back then it was easy to argue that the world didn't need another object-oriented programming language.