Which is 100 percent object oriented language?

Answer 1

There are relatively few 100% object-oriented programming languages, with C#, Ruby and SmallTalk being notable exceptions. Languages such as Java are not 100% object-oriented purely because they still maintain the concept of primitive data types, such as int and char, which are simply not capable of being treated as true objects.

Answer 2

OOP languagesSimula (1967) is generally accepted as the first language to have the primary features of an object-oriented language. It was created for making simulation programs, in which what came to be called objects were the most important information representation. Smalltalk (1972 to 1980) is arguably the canonical example, and the one with which much of the theory of object-oriented programming was developed. Concerning the degree of object orientation, the following distinctions can be made:

• Languages called "pure" OO languages, because everything in them is treated consistently as an object, from primitives such as characters and punctuation, all the way up to whole classes, prototypes, blocks, modules, etc. They were designed specifically to facilitate, even enforce, OO methods. Examples: Eiffel, Emerald.[19], JADE, Obix, Scala, Smalltalk
• Languages designed mainly for OO programming, but with some procedural elements. Examples: C++, Java, C#, VB.NET, Python.
• Languages that are historically procedural languages, but have been extended with some OO features. Examples: Visual Basic (derived from BASIC), Fortran, Perl, COBOL 2002, PHP, ABAP.
• Languages with most of the features of objects (classes, methods, inheritance, reusability), but in a distinctly original form. Examples: Oberon (Oberon-1 or Oberon-2) and Common Lisp.
• Languages with abstract data type support, but not all features of object-orientation, sometimes called object-basedlanguages. Examples: Modula-2 (with excellent encapsulation and information hiding), Pliant, CLU.

Answer 3

A fully object-oriented language is one where primitives such as int and float are implemented as objects and where pointers, if available, are implemented as "smart" pointers or resource handles rather than as raw pointers.