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  2. Object-oriented programming - Wikipedia

    en.wikipedia.org/wiki/Object-oriented_programming

    The messages that flow between computers to request services in a client-server environment can be designed as the linearizations of objects defined by class objects known to both the client and the server. For example, a simple linearized object would consist of a length field, a code point identifying the class, and a data value.

  3. Builder pattern - Wikipedia

    en.wikipedia.org/wiki/Builder_pattern

    In the above UML class diagram, the Director class doesn't create and assemble the ProductA1 and ProductB1 objects directly. Instead, the Director refers to the Builder interface for building (creating and assembling) the parts of a complex object, which makes the Director independent of which concrete classes are instantiated (which ...

  4. Class-based programming - Wikipedia

    en.wikipedia.org/wiki/Class-based_programming

    An object must be explicitly created based on a class and an object thus created is considered to be an instance of that class. An object is similar to a structure, with the addition of method pointers, member access control, and an implicit data member which locates instances of the class (i.e., objects of the class) in the class hierarchy ...

  5. Class (computer programming) - Wikipedia

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

    In object-oriented programming, a class defines the shared aspects of objects created from the class. The capabilities of a class differ between programming languages , but generally the shared aspects consist of state ( variables ) and behavior ( methods ) that are each either associated with a particular object or with all objects of that class.

  6. Covariant return type - Wikipedia

    en.wikipedia.org/wiki/Covariant_return_type

    Covariant return types have been (partially) allowed in the Java language since the release of JDK5.0, [2] so the following example wouldn't compile on a previous release: // Classes used as return types: class A { } class B extends A { } // "Class B is narrower than class A" // Classes demonstrating method overriding: class C { A getFoo ...

  7. C (programming language) - Wikipedia

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

    This is an accepted version of this page This is the latest accepted revision, reviewed on 23 December 2024. General-purpose programming language "C programming language" redirects here. For the book, see The C Programming Language. Not to be confused with C++ or C#. C Logotype used on the cover of the first edition of The C Programming Language Paradigm Multi-paradigm: imperative (procedural ...

  8. Comparison of C Sharp and Java - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_C_Sharp_and_Java

    This means that a method operates on copies of the primitives passed to it instead of on the actual variables. On the contrary, the actual objects in some cases can be changed. In the following example, object String is not changed. Object of class 'a' is changed.

  9. Java syntax - Wikipedia

    en.wikipedia.org/wiki/Java_syntax

    If a class does not specify its superclass, it implicitly inherits from java.lang.Object class. Thus all classes in Java are subclasses of Object class. If the superclass does not have a constructor without parameters the subclass must specify in its constructors what constructor of the superclass to use. For example: