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Object-oriented programming

"Object-oriented" redirects here. For other meanings of object-oriented, see Object-orientation.

UML notation for a class. This Button class has variables for data, and functions. Through inheritance, a subclass can be created as a subset of the Button class. Objects are instances of a class.

Object-oriented programming (OOP) is a programming paradigm based on the concept of objects,[1] which can contain data and code: data in the form of fields (often known as attributes or properties), and code in the form of procedures (often known as methods). In OOP, computer programs are designed by making them out of objects that interact with one another.[2][3]

Many of the most widely used programming languages (such as C++, Java,[4] and Python) are multi-paradigm and support object-oriented programming to a greater or lesser degree, typically in combination with imperative programming, procedural programming and functional programming.

Significant object-oriented languages include Ada, ActionScript, C++, Common Lisp, C#, Dart, Eiffel, Fortran 2003, Haxe, Java,[4] JavaScript, Kotlin, Logo, MATLAB, Objective-C, Object Pascal, Perl, PHP, Python, R, Raku, Ruby, Scala, SIMSCRIPT, Simula, Smalltalk, Swift, Vala and Visual Basic.NET.

  1. ^ Cite error: The named reference alanKayOnOO was invoked but never defined (see the help page).
  2. ^ Kindler, E.; Krivy, I. (2011). "Object-Oriented Simulation of systems with sophisticated control". International Journal of General Systems. 40 (3): 313–343. doi:10.1080/03081079.2010.539975.
  3. ^ Lewis, John; Loftus, William (2008). Java Software Solutions Foundations of Programming Design 6th ed. Pearson Education Inc. ISBN 978-0-321-53205-3., section 1.6 "Object-Oriented Programming"
  4. ^ a b Bloch 2018, pp. xi–xii, Foreword.

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