klasses

Klasses is the plural form of the term klass, a concept commonly used in discussions of object-oriented programming to refer to the construct known as a class. In most programming languages the standard term is class, and the actual keyword used to declare one varies by language. The spelling klasses is therefore mostly found in informal writing, multilingual texts, or when distinguishing multiple class definitions in examples.

A class defines a type of object by specifying its data and behavior. It lists fields or properties that describe the state of an instance and methods that implement its operations. A class may include a constructor to initialize new objects and may provide a destructor or cleanup mechanism depending on the language. Classes enable encapsulation by controlling access to members through modifiers such as public, private, or protected. They also serve as the foundation for inheritance and polymorphism.

Beyond the basics, many languages support abstract classes that cannot be instantiated, interfaces that define a contract without implementation, and generics or templates that allow parameterized types. Static members belong to the class as a whole rather than to instances. Reflection, serialization, and design patterns further extend how classes are used in software systems.

In software design, class diagrams and models help convey structure and relationships. The concept of klasses or classes underpins many principles of object-oriented design, including separation of concerns and the open/closed principle. The term klasses is not a standard keyword in any particular language but signals discussions about multiple class definitions.