Web Reference: Mar 7, 2026 · Encapsulation means combining data and the functions that work on that data into a single unit, like a class. In Object-Oriented Programming, it helps keep things organized and secure. A class can hide the implementation part and discloses only the functionalities required by other classes. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Encapsulation in Java is a mechanism of wrapping the data (variables) and code acting on the data (methods) together as a single unit. In encapsulation, the variables of a class will be hidden from other classes, and can be accessed only through the methods of their current class.
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