This document discusses encapsulation in object-oriented programming. It defines encapsulation as binding processing functions to data within self-contained modules or classes. Encapsulation keeps data safe from outside interfaces and misuse by wrapping the data and code that operates on it into a single entity. Benefits include improved understandability, security, and easier application maintenance. The document provides an example program demonstrating encapsulation through a College class with private data members and public member functions. It concludes that encapsulation is an important OOP feature that bundles data and functions together while allowing interaction through defined interfaces only.