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Available in 12 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-12" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">12 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A3%D9%86%D9%85%D8%A7%D8%B7_%D8%A5%D9%86%D8%B4%D8%A7%D8%A6%D9%8A%D8%A9" title="أنماط إنشائية – Arabic" lang="ar" hreflang="ar" data-title="أنماط إنشائية" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/%C5%A0ema_stvaranja" title="Šema stvaranja – Bosnian" lang="bs" hreflang="bs" data-title="Šema stvaranja" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Erzeugungsmuster" title="Erzeugungsmuster – German" lang="de" hreflang="de" data-title="Erzeugungsmuster" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A7%D9%84%DA%AF%D9%88%DB%8C_%D8%AE%D9%84%D8%A7%D9%82%DB%8C%D8%AA" title="الگوی خلاقیت – Persian" lang="fa" hreflang="fa" data-title="الگوی خلاقیت" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8D%D5%BF%D5%A5%D5%B2%D5%AE%D5%B8%D5%B2_%D5%B1%D6%87%D5%A1%D5%B6%D5%B4%D5%B8%D6%82%D5%B7%D5%B6%D5%A5%D6%80" title="Ստեղծող ձևանմուշներ – Armenian" lang="hy" hreflang="hy" data-title="Ստեղծող ձևանմուշներ" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/L%C3%A9trehoz%C3%A1si_minta" title="Létrehozási minta – Hungarian" lang="hu" hreflang="hu" data-title="Létrehozási minta" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%BE%D1%80%D0%BE%D0%B6%D0%B4%D0%B0%D1%8E%D1%89%D0%B8%D0%B5_%D1%88%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD%D1%8B_%D0%BF%D1%80%D0%BE%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F" title="Порождающие шаблоны проектирования – Russian" lang="ru" hreflang="ru" data-title="Порождающие шаблоны проектирования" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A3%D0%B7%D0%BE%D1%80%D1%86%D0%B8_%D0%BA%D1%80%D0%B5%D0%B8%D1%80%D0%B0%D1%9A%D0%B0" title="Узорци креирања – Serbian" lang="sr" hreflang="sr" data-title="Узорци креирања" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%89%E0%AE%B0%E0%AF%81%E0%AE%B5%E0%AE%BE%E0%AE%95%E0%AF%8D%E0%AE%95%E0%AF%81%E0%AE%AE%E0%AF%8D_%E0%AE%B5%E0%AE%9F%E0%AE%BF%E0%AE%B5%E0%AE%AE%E0%AF%88%E0%AE%AA%E0%AF%8D%E0%AE%AA%E0%AF%81_%E0%AE%AE%E0%AF%81%E0%AE%B1%E0%AF%88%E0%AE%95%E0%AE%B3%E0%AF%8D(%E0%AE%AE%E0%AF%86%E0%AE%A9%E0%AF%8D%E0%AE%AA%E0%AF%8A%E0%AE%B0%E0%AF%81%E0%AE%B3%E0%AF%8D)" title="உருவாக்கும் வடிவமைப்பு முறைகள்(மென்பொருள்) – Tamil" lang="ta" hreflang="ta" data-title="உருவாக்கும் வடிவமைப்பு முறைகள்(மென்பொருள்)" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A2%D0%B2%D1%96%D1%80%D0%BD%D1%96_%D1%88%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD%D0%B8" title="Твірні шаблони – Ukrainian" lang="uk" hreflang="uk" data-title="Твірні шаблони" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E5%BB%BA%E7%AB%8B%E5%9E%8B%E6%A8%A1%E5%BC%8F" title="建立型模式 – Cantonese" lang="yue" hreflang="yue" data-title="建立型模式" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%89%B5%E5%BB%BA%E5%9E%8B%E6%A8%A1%E5%BC%8F" title="創建型模式 – Chinese" lang="zh" hreflang="zh" data-title="創建型模式" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1063550#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit 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</div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Software design pattern dealing with object creation</div> <p>In <a href="/wiki/Software_engineering" title="Software engineering">software engineering</a>, <b>creational design patterns</b> are <a href="/wiki/Design_pattern_(computer_science)" class="mw-redirect" title="Design pattern (computer science)">design patterns</a> that deal with <a href="/wiki/Object_lifetime" title="Object lifetime">object creation</a> mechanisms, trying to create <a href="/wiki/Object_(computer_science)" title="Object (computer science)">objects</a> in a manner suitable to the situation. The basic form of object creation could result in design problems or in added complexity to the design due to inflexibility in the creation procedures. Creational design patterns solve this problem by somehow controlling this object creation. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Overview">Overview</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Creational_pattern&action=edit&section=1" title="Edit section: Overview"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Creational design patterns are composed of two dominant ideas. One is encapsulating knowledge about which concrete <a href="/wiki/Class_(computer_programming)" title="Class (computer programming)">classes</a> the system uses. Another is hiding how <a href="/wiki/Instance_(computer_science)" title="Instance (computer science)">instances</a> of these concrete classes are created and combined.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Creational design patterns are further categorized into object-creational patterns and class-creational patterns, where object-creational patterns deal with object creation and class-creational patterns deal with class-instantiation. In greater details, object-creational patterns defer part of its object creation to another object, while class-creational patterns defer its object creation to subclasses.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Five well-known design patterns that are parts of creational patterns are the </p> <ul><li><a href="/wiki/Abstract_factory_pattern" title="Abstract factory pattern">abstract factory pattern</a>, which provides an interface for creating related or dependent objects without specifying the objects' concrete classes.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Builder_pattern" title="Builder pattern">builder pattern</a>, which separates the construction of a complex object from its representation so that the same construction process can create different representations.</li> <li><a href="/wiki/Factory_method_pattern" title="Factory method pattern">factory method pattern</a>, which allows a class to defer instantiation to subclasses.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Prototype_pattern" title="Prototype pattern">prototype pattern</a>, which specifies the kind of object to create using a prototypical instance, and creates new objects by cloning this prototype.</li> <li><a href="/wiki/Singleton_pattern" title="Singleton pattern">singleton pattern</a>, which ensures that a class only has one instance, and provides a global point of access to it.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Definition">Definition</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Creational_pattern&action=edit&section=2" title="Edit section: Definition"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The creational patterns aim to separate a system from how its objects are created, composed, and represented. They increase the system's flexibility in terms of the what, who, how, and when of object creation. <sup id="cite_ref-CS3DP_6-0" class="reference"><a href="#cite_note-CS3DP-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Usage">Usage</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Creational_pattern&action=edit&section=3" title="Edit section: Usage"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>As modern software engineering depends more on <a href="/wiki/Object_composition" title="Object composition">object composition</a> than class inheritance, emphasis shifts away from hard-coding behaviors toward defining a smaller set of basic behaviors that can be composed into more complex ones.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Hard-coding behaviors are inflexible because they require overriding or re-implementing the whole thing in order to change parts of the design. Additionally, hard-coding does not promote reuse and makes it difficult to keep track of errors. For these reasons, creational patterns are more useful than hard-coding behaviors. Creational patterns make design become more flexible. They provide different ways to remove explicit references in the concrete classes from the code that needs to instantiate them.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> In other words, they create independency for objects and classes. </p><p>Consider applying creational patterns when: </p> <ul><li>A system should be independent of how its objects and products are created.</li> <li>A set of related objects is designed to be used together.</li> <li>Hiding the implementations of a class library or product, revealing only their interfaces.</li> <li>Constructing different representation of independent complex objects.</li> <li>A class wants its subclass to implement the object it creates.</li> <li>The class instantiations are specified at run-time.</li> <li>There must be a single instance and client can access this instance at all times.</li> <li>Instance should be extensible without being modified.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Structure">Structure</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Creational_pattern&action=edit&section=4" title="Edit section: Structure"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Creational_Pattern_Simple_Structure.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/f/f6/Creational_Pattern_Simple_Structure.png/220px-Creational_Pattern_Simple_Structure.png" decoding="async" width="220" height="273" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/f/f6/Creational_Pattern_Simple_Structure.png 1.5x" data-file-width="243" data-file-height="302" /></a><figcaption>Creational Pattern class diagram.</figcaption></figure> <p>Below is a simple class diagram that most creational patterns have in common. Note that different creational patterns require additional and different participated classes. </p><p><b>Participants</b>: </p> <ul><li><b>Creator</b>: Declares object interface. Returns object.</li> <li><b>ConcreteCreator</b>: Implements object's interface.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Examples">Examples</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Creational_pattern&action=edit&section=5" title="Edit section: Examples"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Some examples of creational design patterns include: </p> <ul><li><a href="/wiki/Abstract_factory_pattern" title="Abstract factory pattern">Abstract Factory pattern</a>: a class requests the objects it requires from a factory object instead of creating the objects directly</li> <li><a href="/wiki/Factory_method_pattern" title="Factory method pattern">Factory method pattern</a>: centralize creation of an object of a specific type choosing one of several implementations</li> <li><a href="/wiki/Builder_pattern" title="Builder pattern">Builder pattern</a>: separate the construction of a complex object from its representation so that the same construction process can create different representations</li> <li><a href="/wiki/Dependency_injection" title="Dependency injection">Dependency Injection pattern</a>: a class accepts the objects it requires from an injector instead of creating the objects directly</li> <li><a href="/wiki/Lazy_initialization_pattern" class="mw-redirect" title="Lazy initialization pattern">Lazy initialization pattern</a>: tactic of delaying the creation of an object, the calculation of a value, or some other expensive process until the first time it is needed</li> <li><a href="/wiki/Object_pool_pattern" title="Object pool pattern">Object pool pattern</a>: avoid expensive acquisition and release of resources by recycling objects that are no longer in use</li> <li><a href="/wiki/Prototype_pattern" title="Prototype pattern">Prototype pattern</a>: used when the type of objects to create is determined by a prototypical instance, which is cloned to produce new objects</li> <li><a href="/wiki/Singleton_pattern" title="Singleton pattern">Singleton pattern</a>: restrict instantiation of a class to one object</li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Creational_pattern&action=edit&section=6" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Constructor_(object-oriented_programming)" title="Constructor (object-oriented programming)">Constructor</a></li> <li><a href="/wiki/Behavioral_pattern" title="Behavioral pattern">Behavioral pattern</a></li> <li><a href="/wiki/Concurrency_pattern" title="Concurrency pattern">Concurrency pattern</a></li> <li><a href="/wiki/Structural_pattern" title="Structural pattern">Structural pattern</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Creational_pattern&action=edit&section=7" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFGammaHelmJohnsonVlissides1995" class="citation book cs1">Gamma, Erich; Helm, Richard; Johnson, Ralph; Vlissides, John (1995). <a rel="nofollow" class="external text" href="https://archive.org/details/designpatternsel00gamm/page/81"><i>Design Patterns</i></a>. Massachusetts: Addison-Wesley. p. <a rel="nofollow" class="external text" href="https://archive.org/details/designpatternsel00gamm/page/81">81</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-201-63361-0" title="Special:BookSources/978-0-201-63361-0"><bdi>978-0-201-63361-0</bdi></a><span class="reference-accessdate">. Retrieved <span class="nowrap">2015-05-22</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Design+Patterns&rft.place=Massachusetts&rft.pages=81&rft.pub=Addison-Wesley&rft.date=1995&rft.isbn=978-0-201-63361-0&rft.aulast=Gamma&rft.aufirst=Erich&rft.au=Helm%2C+Richard&rft.au=Johnson%2C+Ralph&rft.au=Vlissides%2C+John&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fdesignpatternsel00gamm%2Fpage%2F81&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACreational+pattern" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGammaHelmJohnsonVlissides1995" class="citation book cs1">Gamma, Erich; Helm, Richard; Johnson, Ralph; Vlissides, John (1995). <a rel="nofollow" class="external text" href="https://archive.org/details/designpatternsel00gamm"><i>Design Patterns</i></a>. Massachusetts: Addison-Wesley. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-201-63361-0" title="Special:BookSources/978-0-201-63361-0"><bdi>978-0-201-63361-0</bdi></a><span class="reference-accessdate">. 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Hendrickson, Mike; Loukides, Mike (eds.). <a rel="nofollow" class="external text" href="http://shop.oreilly.com/product/9780596007126.do"><i>Head First Design Patterns</i></a>. California: O'Reilly Media. p. 156. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-596-00712-6" title="Special:BookSources/978-0-596-00712-6"><bdi>978-0-596-00712-6</bdi></a><span class="reference-accessdate">. Retrieved <span class="nowrap">2015-05-22</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Head+First+Design+Patterns&rft.place=California&rft.pages=156&rft.pub=O%27Reilly+Media&rft.date=2004&rft.isbn=978-0-596-00712-6&rft.aulast=Freeman&rft.aufirst=Eric&rft.au=Freeman%2C+Elisabeth&rft.au=Sierra%2C+Kathy&rft.au=Bates%2C+Bert&rft_id=http%3A%2F%2Fshop.oreilly.com%2Fproduct%2F9780596007126.do&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACreational+pattern" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFreemanFreemanSierraBates2004" class="citation book cs1">Freeman, Eric; Freeman, Elisabeth; Sierra, Kathy; Bates, Bert (2004). 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.navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Design_patterns" title="Template:Design patterns"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Design_patterns" title="Template talk:Design patterns"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Design_patterns" title="Special:EditPage/Template:Design patterns"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Software_design_patterns225" style="font-size:114%;margin:0 4em"><a href="/wiki/Software_design_pattern" title="Software design pattern">Software design patterns</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Design_Patterns" title="Design Patterns">Gang of Four<br />patterns</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a class="mw-selflink selflink">Creational</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Abstract_factory_pattern" title="Abstract factory pattern">Abstract factory</a></li> <li><a href="/wiki/Builder_pattern" title="Builder pattern">Builder</a></li> <li><a href="/wiki/Factory_method_pattern" title="Factory method pattern">Factory method</a></li> <li><a href="/wiki/Prototype_pattern" title="Prototype pattern">Prototype</a></li> <li><a href="/wiki/Singleton_pattern" title="Singleton pattern">Singleton</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Structural_pattern" title="Structural pattern">Structural</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Adapter_pattern" title="Adapter pattern">Adapter</a></li> <li><a href="/wiki/Bridge_pattern" title="Bridge pattern">Bridge</a></li> <li><a href="/wiki/Composite_pattern" title="Composite pattern">Composite</a></li> <li><a href="/wiki/Decorator_pattern" title="Decorator pattern">Decorator</a></li> <li><a href="/wiki/Facade_pattern" title="Facade pattern">Facade</a></li> <li><a href="/wiki/Flyweight_pattern" title="Flyweight pattern">Flyweight</a></li> <li><a href="/wiki/Proxy_pattern" title="Proxy pattern">Proxy</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Behavioral_pattern" title="Behavioral pattern">Behavioral</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chain-of-responsibility_pattern" title="Chain-of-responsibility pattern">Chain of responsibility</a></li> <li><a href="/wiki/Command_pattern" title="Command pattern">Command</a></li> <li><a href="/wiki/Interpreter_pattern" title="Interpreter pattern">Interpreter</a></li> <li><a href="/wiki/Iterator_pattern" title="Iterator pattern">Iterator</a></li> <li><a href="/wiki/Mediator_pattern" title="Mediator pattern">Mediator</a></li> <li><a href="/wiki/Memento_pattern" title="Memento pattern">Memento</a></li> <li><a href="/wiki/Observer_pattern" title="Observer pattern">Observer</a></li> <li><a href="/wiki/State_pattern" title="State pattern">State</a></li> <li><a href="/wiki/Strategy_pattern" title="Strategy pattern">Strategy</a></li> <li><a href="/wiki/Template_method_pattern" title="Template method pattern">Template method</a></li> <li><a href="/wiki/Visitor_pattern" title="Visitor pattern">Visitor</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Concurrency_pattern" title="Concurrency pattern">Concurrency<br />patterns</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Active_object" title="Active object">Active object</a></li> <li><a href="/wiki/Balking_pattern" title="Balking pattern">Balking</a></li> <li><a href="/wiki/Binding_properties_pattern" title="Binding properties pattern">Binding properties</a></li> <li><a href="/wiki/Double-checked_locking" title="Double-checked locking">Double-checked locking</a></li> <li><a href="/wiki/Asynchronous_method_invocation" title="Asynchronous method invocation">Event-based asynchronous</a></li> <li><a href="/wiki/Guarded_suspension" title="Guarded suspension">Guarded suspension</a></li> <li><a href="/wiki/Join-pattern" title="Join-pattern">Join</a></li> <li><a href="/wiki/Lock_(computer_science)" title="Lock (computer science)">Lock</a></li> <li><a href="/wiki/Monitor_(synchronization)" title="Monitor (synchronization)">Monitor</a></li> <li><a href="/wiki/Proactor_pattern" title="Proactor pattern">Proactor</a></li> <li><a href="/wiki/Reactor_pattern" title="Reactor pattern">Reactor</a></li> <li><a href="/wiki/Readers%E2%80%93writer_lock" title="Readers–writer lock">Read–write lock</a></li> <li><a href="/wiki/Scheduler_pattern" class="mw-redirect" title="Scheduler pattern">Scheduler</a></li> <li><a href="/wiki/Scheduled-task_pattern" title="Scheduled-task pattern">Scheduled-task pattern</a></li> <li><a href="/wiki/Semaphore_(programming)" title="Semaphore (programming)">Semaphore</a></li> <li><a href="/wiki/Thread_pool" title="Thread pool">Thread pool</a></li> <li><a href="/wiki/Thread-local_storage" title="Thread-local storage">Thread-local storage</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Architectural_pattern" title="Architectural pattern">Architectural<br />patterns</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Front_controller" title="Front controller">Front controller</a></li> <li><a href="/wiki/Interceptor_pattern" title="Interceptor pattern">Interceptor</a></li> <li><a href="/wiki/Model%E2%80%93view%E2%80%93controller" title="Model–view–controller">MVC</a> <ul><li><a href="/wiki/Model%E2%80%93view%E2%80%93presenter" title="Model–view–presenter">MVP</a></li> <li><a href="/wiki/Model%E2%80%93view%E2%80%93viewmodel" title="Model–view–viewmodel">MVVM</a></li></ul></li> <li><a href="/wiki/Action%E2%80%93domain%E2%80%93responder" title="Action–domain–responder">ADR</a></li> <li><a href="/wiki/Entity_component_system" title="Entity component system">ECS</a></li> <li><a href="/wiki/Multitier_architecture" title="Multitier architecture"><i>n</i>-tier</a></li> <li><a href="/wiki/Specification_pattern" title="Specification pattern">Specification</a></li> <li><a href="/wiki/Publish%E2%80%93subscribe_pattern" title="Publish–subscribe pattern">Publish–subscribe</a></li> <li><a href="/wiki/Naked_objects" title="Naked objects">Naked objects</a></li> <li><a href="/wiki/Service_locator_pattern" title="Service locator pattern">Service locator</a></li> <li><a href="/wiki/Active_record_pattern" title="Active record pattern">Active record</a></li> <li><a href="/wiki/Identity_map_pattern" title="Identity map pattern">Identity map</a></li> <li><a href="/wiki/Data_access_object" title="Data access object">Data access object</a></li> <li><a href="/wiki/Data_transfer_object" title="Data transfer object">Data transfer object</a></li> <li><a href="/wiki/Inversion_of_control" title="Inversion of control">Inversion of control</a></li> <li><a href="/wiki/JSP_model_2_architecture" title="JSP model 2 architecture">Model 2</a></li> <li><a href="/wiki/Broker_pattern" title="Broker pattern">Broker</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other<br />patterns</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Blackboard_design_pattern" class="mw-redirect" title="Blackboard design pattern">Blackboard</a></li> <li><a href="/wiki/Business_delegate_pattern" title="Business delegate pattern">Business delegate</a></li> <li><a href="/wiki/Composite_entity_pattern" title="Composite entity pattern">Composite entity</a></li> <li><a href="/wiki/Dependency_injection" title="Dependency injection">Dependency injection</a></li> <li><a href="/wiki/Intercepting_filter_pattern" title="Intercepting filter pattern">Intercepting filter</a></li> <li><a href="/wiki/Lazy_loading" title="Lazy loading">Lazy loading</a></li> <li><a href="/wiki/Mock_object" title="Mock object">Mock object</a></li> <li><a href="/wiki/Null_object_pattern" title="Null object pattern">Null object</a></li> <li><a href="/wiki/Object_pool_pattern" title="Object pool pattern">Object pool</a></li> <li><a href="/wiki/Servant_(design_pattern)" title="Servant (design pattern)">Servant</a></li> <li><a href="/wiki/Twin_pattern" title="Twin pattern">Twin</a></li> <li><a href="/wiki/Type_Tunnel_pattern" class="mw-redirect" title="Type Tunnel pattern">Type tunnel</a></li> <li><a href="/wiki/Method_chaining" title="Method chaining">Method chaining</a></li> <li><a href="/wiki/Delegation_pattern" title="Delegation pattern">Delegation</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Books</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Design_Patterns" title="Design Patterns">Design Patterns</a></i></li> <li><i><a href="/wiki/Enterprise_Integration_Patterns" title="Enterprise Integration Patterns">Enterprise Integration Patterns</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Christopher_Alexander" title="Christopher Alexander">Christopher Alexander</a></li> <li><a href="/wiki/Erich_Gamma" title="Erich Gamma">Erich Gamma</a></li> <li><a href="/wiki/Ralph_Johnson_(computer_scientist)" title="Ralph Johnson (computer scientist)">Ralph Johnson</a></li> <li><a href="/wiki/John_Vlissides" title="John Vlissides">John Vlissides</a></li> <li><a href="/wiki/Grady_Booch" title="Grady Booch">Grady Booch</a></li> <li><a href="/wiki/Kent_Beck" title="Kent Beck">Kent Beck</a></li> <li><a href="/wiki/Ward_Cunningham" title="Ward Cunningham">Ward Cunningham</a></li> <li><a href="/wiki/Martin_Fowler_(software_engineer)" title="Martin Fowler (software engineer)">Martin Fowler</a></li> <li><a href="/wiki/Robert_C._Martin" title="Robert C. Martin">Robert Martin</a></li> <li><a href="/wiki/Jim_Coplien" title="Jim Coplien">Jim Coplien</a></li> <li><a href="/wiki/Douglas_C._Schmidt" title="Douglas C. Schmidt">Douglas Schmidt</a></li> <li><a href="/wiki/Linda_Rising" title="Linda Rising">Linda Rising</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Communities</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/The_Hillside_Group" title="The Hillside Group">The Hillside Group</a></li> <li><a href="/wiki/Portland_Pattern_Repository" title="Portland Pattern Repository">Portland Pattern Repository</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">See also</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Anti-pattern" title="Anti-pattern">Anti-pattern</a></li> <li><a href="/wiki/Architectural_pattern" title="Architectural pattern">Architectural pattern</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Creational_pattern&oldid=1211548526">https://en.wikipedia.org/w/index.php?title=Creational_pattern&oldid=1211548526</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Category</a>: <ul><li><a href="/wiki/Category:Software_design_patterns" title="Category:Software design patterns">Software design patterns</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_matches_Wikidata" title="Category:Short description matches Wikidata">Short description matches Wikidata</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 3 March 2024, at 03:39<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. 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