Object-oriented programming

Object-oriented programming (OOP, OO, etc.) is a programming paradigm based on the concept of objects.

Description

Objects have two parts:

• Data structures that contain data, in the form of fields, often known as attributes

• Code, in the form of procedures, often known as methods.

A distinguishing feature of objects is that an object's procedures can access and often modify the data fields of the object with which they are associated (objects have a notion of "this").

In OO programming, computer programs are designed by making them out of objects that interact with one another.

There is significant diversity in object-oriented programming, but most popular languages are class-based, meaning that objects are instances of classes, which typically also determines their type.

See also

• Class (computer programming)
• Comparison of programming languages (object-oriented programming)
• Comparison of programming paradigms
• Component-based software engineering
• Computer programming
• Design by contract
• Inheritance (object-oriented programming)
• Member variable - a variable that is associated with a specific object, and accessible for all its methods (member functions).
• Modular programming
• Object association
• Object database
• Object modeling language
• Object-oriented analysis and design
• Object-relational impedance mismatch (and The Third Manifesto)
• Object-relational mapping
• Programming paradigm
• Software design pattern
• UML
• Yii

External links

• Object-oriented programming @ Wikipedia