Encyclopedia > Object-oriented programming language

  Article Content

Object-oriented programming language

An Object-oriented programming language is one that allows or encourages, to some degree, object-oriented programming methods. See object-oriented programming for details about those methods.

Though Simula (1967), a language created for making simulation programs, was probably the first language to have the primary features of an object-oriented language, Smalltalk is arguably the canonical example, and the one with which much of the theory of object-oriented programming was developed.

These languages include "pure" object-oriented languages such as Smalltalk and Ruby, which were designed specifically to facilitate--even enforce--object-oriented methods; languages such as Java, Eiffel, and Python, which are primarily designed for object-oriented programming but have some procedural elements; and languages such as C++ and Perl[?], which are historically procedural languages that have been extended with some object-oriented features.

Some languages include abstract data type support, but not all of the features of object orientation. These are sometimes called object-based languages. PHP 4, for example, includes no provisions for inheritance or polymorphism, but does allow for a concept of "class", and thus enables the programmer to use unenforced versions of abstraction and encapsulation. This is often useful--inheritance and polymorphism are usually used to reduce code bloat[?], but abstraction and encapsulation are used to increase code clarity, quite independent of the other two.

Languages with object-oriented features

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
East Marion, New York

... of it is land and 0.3 km² (0.1 mi²) of it is water. The total area is 5.83% water. Demographics As of the census of 2000, there are 756 people, 329 ...

This page was created in 34.9 ms