Bop to the top!

The Proxy pattern is used when you need to represent a complexobject by a simpler one. If creating an object is expensive in time or computerresources, Proxy allows you to postpone this creation

The adapter design pattern translates one interface for a class into a compatible interface. An adapter allows classes to work together that normally could not because ofincompatible int

· The Factory Pattern is used to choose and return an instance of a classfrom a number of similar classes based on data you provide to thefactory.· The Abstract Factory Pattern is used to return

In computer science, the composite pattern is a partitioning design pattern.Composite allows a group of objects to be treated in the same way as asingle instance of an object. The intent of comp

The bridge pattern is a design pattern used in software engineering which is meant to "decouple an abstraction from its implementation so that the two can vary independently". The bridge

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Download:The gang of four patterns in LePUS3 (Visio 2003 format)The gang of four patterns in UML (Visio 2003 format)

The facade pattern is a software engineering design pattern commonly used with Object-oriented programming.A facade is an object that provides a simplified interface to a larger body of code, such

The term comes from the boxing weight classwith the same name. Often some parts of the object state can be sharedand its common to put them in external data structures and pass themto the flywe

The memento pattern is a software design pattern that provides the ability to restore an object to its previous state (undo via rollback).The memento pattern is used by two objects: the originator

DefinitionSpecify the kinds of objects to create using a prototypical instance, and create new objects by copying this prototype. Class Diagram Participan

The Builder Pattern is a software design pattern.The intention is to abstract steps of construction of objects so thatdifferent implementations of these steps can construct differentrepres

The Adapter pattern, used to change the interface of one class to that ofanother one.The Bridge pattern, intended to keep the interface to your client programconstant while allowing you to c

In Object Oriented Design, the chain-of-responsibility pattern is a design pattern consisting of a source of command objects and a series of processing objects.Each processing object contains

The command pattern is a design pattern in which an object is used to represent and encapsulateall the information needed to call a method at a later time. Thisinformation includes the metho

In computer programming, the interpreter pattern is a particular design pattern. The interpreter pattern specifies how to evaluate sentences in a language. The basic idea is to have a class for each

The Iterator is one of the simplest and most frequently used of thedesign patterns. The Iterator pattern allows you to move through a list orcollection of data using a standard interface without h

Introduction The Mediator is a behavioral design pattern that provides a central hub to guide the interactions between many objects. According to Gamma et al, the intent of the Media

Intent: Define an interface for creating an object,but let subclasses decide which class to instantiate. Factory Methodlets a class defer instantiation to subclasses.Structure: Participant

The Abstract Factory pattern is one level of abstraction higher thanthe factory pattern. You can use this pattern when you want to return one ofseveral related classes of objects, each of

Common usesThe Abstract Factory, Builder, and Prototype patterns can use Singletons in their implementation.Facade objects are often Singletons because only one Facade object is required.Sta

The observer pattern (a subset of the asynchronous publish/subscribe pattern) is a software design pattern in which an object,called the subject, maintains a list of its dependents, calledobserv