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Ilkka Seppälä
33 lines
1.4 KiB
Markdown
33 lines
1.4 KiB
Markdown
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#Design pattern samples in Java.
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##Abstract Factory
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**Intent:** Provide an interface for creating families of related or dependent objects without specifying their concrete classes.
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##Builder
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**Intent:** Separate the construction of a complex object from its representation so that the same construction process can create different representations.
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##Factory Method
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**Intent:** Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subclasses.
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##Prototype
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**Intent:** Specify the kinds of objects to create using a prototypical instance, and create new objects by copying this prototype.
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##Singleton
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**Intent:** Ensure a class only has one instance, and provide a global point of access to it.
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##Adapter
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**Intent:** Convert the interface of a class into another interface clients expect. Adapter lets classes work together that couldn't otherwise because of incompatible interfaces.
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##Bridge
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**Intent:** Decouple an abstraction from its implementationso that the two can vary independently.
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##Composite
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**Intent:** Compose objects into tree structures to represent part-whole hierarchies. Composite lets clients treat individual objects and compositions of objects uniformly.
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##Decorator
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**Intent:** Attach additional responsibilities to an object dynamically. Decorators provide a flexible alternative to subclassing for extending functionality.
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