#1
22nd June 2015, 08:49 AM
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J2EE Design Patterns with examples
Hey, I would like to know about the J2EE design patterns with examples. so will you please help me by giving the link to get all the details about the J2EE design patterns with examples.? also give me the link to download Design Pattern Tutorial? Give me all the details as soon as possible?
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#2
8th July 2018, 06:35 AM
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Re: J2EE Design Patterns with examples
Hii sir, Will you Please Provide me the Information About the J2EE (Java 2 Platform, Enterprise Edition) With Example ?
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#3
8th July 2018, 06:37 AM
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Re: J2EE Design Patterns with examples
J2EE (Java 2 Platform, Enterprise Edition) has simplified enterprise application construction in Java. As J2EE becomes more broadly adopted, however, developers are realizing the need for defined approaches that both simplify and standardize application building. J2EE design patterns J2EE design patterns have been evolving over the last few years as the Java community has gained J2EE experience. These design patterns identify potential problems encountered when using the various J2EE-specified technologies and help developers construct an application architecture's requirements. Common Design Patterns The table below lists some common design patterns from both J2EE sources and broader OO patterns. J2EE design patterns Software development patterns Session Facade Singleton Value Object Assembler Bridge Service Locator Pattern Prototype Business Delegate Abstract Factory Composite Entity Flyweight Value List Handler Mediator Service Locator Strategy Composite Entity Decorator Value Object State Service to Worker Iterator Data Access Object Chain of Responsibility Intercepting Filter Model View Controller II View Helper Memento Composite View Builder Dispatcher View Factory Method Example: The Session Facade J2EE pattern The Session Facade pattern evolved from experiences with Enterprise JavaBeans (EJBs). Systems built on the newly introduced entity EJBs (which communicate with a database) were slowing to a crawl. Performance testing revealed problems stemming from multiple network calls made when communicating with the entity EJBs, which added overhead for establishing the network connection, serializing the data for both sending and receiving, and other effects. Example: The Value Object J2EE pattern The Value Object J2EE pattern also aims to improve the performance of systems that use EJBs over the network. Those overhead-inducing network calls from the previous example retrieve individual data fields. For instance, you may have a Person entity EJB with methods such as getFirstName(), getMiddleName(), and getLastName(). With the Value Object design pattern, you can reduce such multiple network calls to a single call with a method on the entity EJB, such as getPersonValueObject(), that returns the data all at once. |