Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Object-oriented programming
open-in-new
<p>Object-oriented programming (OOP) is a <a href="/facts/Programming_paradigm/7LwgRpB3">programming paradigm</a> based on the concept of <i><a href="/facts/Object_(computer_science)/eX99dtAw">objects</a></i>. Objects can contain <a href="/facts/Data/AUBFN97o">data</a> (called <a href="/facts/Field_(computer_science)/jt622EDb">fields</a>, <a href="/facts/Attribute_(computing)/EpQSmn02">attributes</a> or <a href="/facts/Property_(programming)/MRIIAw5g">properties</a>) and have actions they can perform (called <a href="/facts/Procedure_(computer_science)/9vFJrg0A">procedures</a> or <a href="/facts/Method_(computing)/8kAXxVYs">methods</a> and implemented in <a href="/facts/Source-code/o9J6Jv23">code</a>). In OOP, <a href="/facts/Computer_program/e38jH9N9">computer programs</a> are designed by making them out of objects that interact with one another. </p><p>Many of the most widely used programming languages (such as <a href="/facts/C%2B%2B/Et0F2qn9">C++</a>, <a href="/facts/Java_(programming_language)/9ScgFyAL">Java</a>, and <a href="/facts/Python_(programming_language)/YbuGqofa">Python</a>) support object-oriented programming to a greater or lesser degree, typically as part of <a href="/facts/Multi-paradigm/7LwgRpB3">multiple paradigms</a> in combination with others such as <a href="/facts/Imperative_programming/6b5dUnE1">imperative programming</a> and <a href="/facts/Declarative_programming/gogtdzcJ">declarative programming</a>. </p><p>Significant object-oriented languages include <a href="/facts/Ada_(programming_language)/Y2yHel4l">Ada</a>, <a href="/facts/ActionScript/xtDQb0wR">ActionScript</a>, <a href="/facts/C%2B%2B/Et0F2qn9">C++</a>, <a href="/facts/Common_Lisp/mq1pRbSF">Common Lisp</a>, <a href="/facts/C_Sharp_(programming_language)/UC2gxeyb">C#</a>, <a href="/facts/Dart_(programming_language)/xJ8tE6Tl">Dart</a>, <a href="/facts/Eiffel_(programming_language)/gEzPjzmn">Eiffel</a>, <a href="/facts/Fortran/m1KqjcMU">Fortran 2003</a>, <a href="/facts/Haxe/jp87sM7P">Haxe</a>, <a href="/facts/Java_(programming_language)/9ScgFyAL">Java</a>, <a href="/facts/JavaScript/XhhIIEsl">JavaScript</a>, <a href="/facts/Kotlin_(programming_language)/CrAqIFLn">Kotlin</a>, <a href="/facts/Logo_(programming_language)/Wh4sdwAh">Logo</a>, <a href="/facts/MATLAB/qPjLISCk">MATLAB</a>, <a href="/facts/Objective-C/5mM557BW">Objective-C</a>, <a href="/facts/Object_Pascal/cuGkuISv">Object Pascal</a>, <a href="/facts/Perl/fx31kjlT">Perl</a>, <a href="/facts/PHP/vU6YRJX0">PHP</a>, <a href="/facts/Python_(programming_language)/YbuGqofa">Python</a>, <a href="/facts/R_(programming_language)/LSrkr8K8">R</a>, <a href="/facts/Raku_(programming_language)/9eYW7vRJ">Raku</a>, <a href="/facts/Ruby_(programming_language)/BeYSaPSR">Ruby</a>, <a href="/facts/Scala_(programming_language)/ebL8o6AK">Scala</a>, <a href="/facts/SIMSCRIPT/B31QrmwA">SIMSCRIPT</a>, <a href="/facts/Simula/gaEVG7SL">Simula</a>, <a href="/facts/Smalltalk/Ru2UPVDE">Smalltalk</a>, <a href="/facts/Swift_(programming_language)/A7qHQC32">Swift</a>, <a href="/facts/Vala_(programming_language)/VnSxeM1b">Vala</a> and <a href="/facts/Visual_Basic.NET/09mPEo4q">Visual Basic.NET</a>. </p>