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  2. Template method pattern - Wikipedia

    en.wikipedia.org/wiki/Template_method_pattern

    In object-oriented programming, the template method is one of the behavioral design patterns identified by Gamma et al. [1] in the book Design Patterns.The template method is a method in a superclass, usually an abstract superclass, and defines the skeleton of an operation in terms of a number of high-level steps.

  3. Class diagram - Wikipedia

    en.wikipedia.org/wiki/Class_diagram

    In software engineering, a class diagram [1] in the Unified Modeling Language (UML) is a type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, operations (or methods), and the relationships among objects. The class diagram is the main building block of object-oriented modeling.

  4. Singleton pattern - Wikipedia

    en.wikipedia.org/wiki/Singleton_pattern

    A class diagram exemplifying the 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.

  5. Creational pattern - Wikipedia

    en.wikipedia.org/wiki/Creational_pattern

    Creational Pattern class diagram. Below is a simple class diagram that most creational patterns have in common. Note that different creational patterns require additional and different participated classes. Participants: Creator: Declares object interface. Returns object. ConcreteCreator: Implements object's interface.

  6. 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 ...

  7. Decorator pattern - Wikipedia

    en.wikipedia.org/wiki/Decorator_pattern

    A sample UML class and sequence diagram for the Decorator design pattern. [7] In the above UML class diagram, the abstract Decorator class maintains a reference (component) to the decorated object (Component) and forwards all requests to it (component.operation()). This makes Decorator transparent (invisible) to clients of Component.

  8. Bridge pattern - Wikipedia

    en.wikipedia.org/wiki/Bridge_pattern

    The bridge pattern is a design pattern used in software engineering that is meant to "decouple an abstraction from its implementation so that the two can vary independently", introduced by the Gang of Four. [1]

  9. Composite pattern - Wikipedia

    en.wikipedia.org/wiki/Composite_pattern

    The Composite class maintains a container of child Component objects (children) and forwards requests to these children (for each child in children: child.operation()). The object collaboration diagram shows the run-time interactions: In this example, the Client object sends a request to the top-level Composite object (of type Component ) in ...