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2. List of object-oriented programming languages - Wikipedia

   en.wikipedia.org/wiki/List_of_object-oriented...

   This is a list of notable programming languages with features designed for object-oriented programming (OOP). The listed languages are designed with varying degrees of OOP support. Some are highly focused in OOP while others support multiple paradigms including OOP. [1] For example, C++ is a multi-paradigm language including OOP; [2] however ...

3. Java (programming language) - Wikipedia

   en.wikipedia.org/wiki/Java_(programming_language)

   Unlike C++, which combines the syntax for structured, generic, and object-oriented programming, Java was built almost exclusively as an object-oriented language. [17] All code is written inside classes, and every data item is an object, with the exception of the primitive data types, (i.e. integers, floating-point numbers, boolean values , and ...

4. Object-oriented programming - Wikipedia

   en.wikipedia.org/wiki/Object-oriented_programming

   Many popular programming languages, like C++, Java, and Python, use object-oriented programming. In the past, OOP was widely accepted, [ 62 ] but recently, some programmers have criticized it and prefer functional programming instead. [ 63 ]

5. Class (computer programming) - Wikipedia

   en.wikipedia.org/wiki/Class_(computer_programming)

   The various object-oriented programming languages enforce member accessibility and visibility to various degrees, and depending on the language's type system and compilation policies, enforced at either compile time or runtime. For example, the Java language does not allow client code that accesses the private data of a class to compile. [12]

6. Object-based language - Wikipedia

   en.wikipedia.org/wiki/Object-based_language

   [citation needed] Examples of strictly object-based languages – supporting an object feature but not inheritance or subtyping – are early versions of Ada, [2] Visual Basic 6 (VB6), and Fortran 90. Some classify prototype-based programming as object-based even though it supports inheritance and subtyping albeit not via a class concept.

7. Class-based programming - Wikipedia

   en.wikipedia.org/wiki/Class-based_programming

   Also, another common example is that a person object created from a child class cannot become an object of parent class because a child class and a parent class inherit a person class but class-based languages mostly do not allow to change the kind of class of the object at runtime. For class-based languages, this restriction is essential in ...

8. Method overriding - Wikipedia

   en.wikipedia.org/wiki/Method_overriding

   C++ does not have the keyword super that a subclass can use in Java to invoke the superclass version of a method that it wants to override. Instead, the name of the parent or base class is used followed by the scope resolution operator. For example, the following code presents two classes, the base class Rectangle, and the derived class Box.

9. Singleton pattern - Wikipedia

   en.wikipedia.org/wiki/Singleton_pattern

   In object-oriented programming, the singleton pattern is a software design pattern that restricts the instantiation of a class to a singular instance. It is one of the well-known "Gang of Four" design patterns , which describe how to solve recurring problems in object-oriented software. [ 1 ]