Creational Patterns

Provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created.

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Lets you produce families of related objects without specifying their concrete classes.

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Lets you construct complex objects step by step. The pattern allows you to produce different types and representations of an object using the same construction code.

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Lets you produce families of related objects without specifying their concrete classes.

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Lets you ensure that a class has only one instance, while providing a global access point to this instance.

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Structural Patterns

Allows objects with incompatible interfaces to collaborate.

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Lets you split a large class or a set of closely related classes into two separate hierarchies—abstraction and implementation—which can be developed independently of each other.

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Lets you compose objects into tree structures and then work with these structures as if they were individual objects.

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Lets you attach new behaviors to objects by placing these objects inside special wrapper objects that contain the behaviors.

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Provides a simplified interface to a library, a framework, or any other complex set of classes.

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Lets you fit more objects into the available amount of RAM by sharing common parts of state between multiple objects instead of keeping all of the data in each object.

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Lets you provide a substitute or placeholder for another object. A proxy controls access to the original object, allowing you to perform something either before or after the request gets through to the original object.

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