추천할 만한 java design pattern 사이트

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추천할 만한 java design pattern 사이트

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Creational Design Patterns: Click to zoom Singleton - Ensure that only one instance of a class is created and Provide a global access point to the object. When to Use , Common Usage , Example: Lazy Singleton in Java, Example: Early Singleton in Java Click to zoom Factory(Simplified version of Factory Method) - Creates objects without exposing the instantiation logic to the client and Refers to the newly created object through a common interface. When to Use , Common Usage Click to zoom Document Application Example Factory Method - Defines an interface for creating objects, but let subclasses to decide which class to instantiate and Refers to the newly created object through a common interface. When to Use , Common Usage Click to zoom Look & Feel Example Abstract Factory - Offers the interface for creating a family of related objects, without explicitly specifying their classes. When to Use , Common Usage , Example: Gui Look & Feel in Java Click to zoom Text Converter Example Builder - Defines an instance for creating an object but letting subclasses decide which class to instantiate and Allows a finer control over the construction process. Example: Text Converter in Java Click to zoom Prototype - Specify the kinds of objects to create using a prototypical instance, and create new objects by copying this prototype. Click to zoom Database Example Object Pool - reuses and shares objects that are expensive to create.. When to Use , Common Usage , Sourcecode: Database Connection Pool in Java Behavioral Design Patterns: Click to zoom Chain of Responsibiliy - It avoids attaching the sender of a request to its receiver, giving this way other objects the possibility of handling the request too. - The objects become parts of a chain and the request is sent from one object to another across the chain until one of the objects will handle it. Sourcecode: Click to zoom Restaurant Example Command - Encapsulate a request in an object, Allows the parameterization of clients with different requests and Allows saving the requests in a queue. Sourcecode: Buying/Selling stocks in Java Click to zoom Interpreter - Given a language, define a representation for its grammar along with an interpreter that uses the representation to interpret sentences in the language / Map a domain to a language, the language to a grammar, and the grammar to a hierarchical object-oriented design Sourcecode: Romans Numerals Converter in Java Click to zoom Iterator - Provide a way to access the elements of an aggregate object sequentially without exposing its underlying representation. Sourcecode: Java Iterator Click to zoom Mediator - Define an object that encapsulates how a set of objects interact. Mediator promotes loose coupling by keeping objects from referring to each other explicitly, and it lets you vary their interaction independently. Sourcecode: Click to zoom News Publisher Example Observer - Define a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically. Sourcecode: News Publisher in Java Click to zoom Robot Example Strategy - Define a family of algorithms, encapsulate each one, and make them interchangeable. Strategy lets the algorithm vary independently from clients that use it. Sourcecode: Robot Application in Java Click to zoom Travel Example Template Method - Define the skeleton of an algorithm in an operation, deferring some steps to subclasses / Template Method lets subclasses redefine certain steps of an algorithm without letting them to change the algorithm's structure. Sourcecode: Travel Agency Application in Java Click to zoom Customers Example Visitor - Represents an operation to be performed on the elements of an object structure / Visitor lets you define a new operation without changing the classes of the elements on which it operates. Sourcecode: Customers Report Example Click to zoom Null Object - Provide an object as a surrogate for the lack of an object of a given type. / The Null Object Pattern provides intelligent do nothing behavior, hiding the details from its collaborators. Sourcecode: Structural Design Patterns: Click to zoom Adapter - Convert the interface of a class into another interface clients expect. / Adapter lets classes work together, that could not otherwise because of incompatible interfaces. Click to zoom Click to zoom Bridge - Compose objects into tree structures to represent part-whole hierarchies. / Composite lets clients treat individual objects and compositions of objects uniformly. Sourcecode: Object Persistence Api in Java Click to zoom Shapes Example Composite - Compose objects into tree structures to represent part-whole hierarchies. / Composite lets clients treat individual objects and compositions of objects uniformly. Sourcecode: Shapes Example in Java Click to zoom GUI Example Decorator - add additional responsibilities dynamically to an object. Sourcecode: Gui Application Example Click to zoom Wargame Example Flyweight - use sharing to support a large number of objects that have part of their internal state in common where the other part of state can vary. Sourcecode: Java Wargame Example Click to zoom Calculator Example Memento - capture the internal state of an object without violating encapsulation and thus providing a mean for restoring the object into initial state when needed. Source Code: Calculator Example in Java Click to zoom Image Viewer Proxy - provide a “Placeholder” for an object to control references to it. Sourcecode: Proxy Pattern in Java

 

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