{"id":8715,"date":"2025-01-05T18:00:16","date_gmt":"2025-01-05T15:00:16","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/"},"modified":"2025-01-05T18:00:16","modified_gmt":"2025-01-05T15:00:16","slug":"akislar-streams-hakkinda-bilmeniz-gereken-her-sey","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/","title":{"rendered":"Ak\u0131\u015flar (Streams) Hakk\u0131nda Bilmeniz Gereken Her \u015eey"},"content":{"rendered":"<p>Ak\u0131\u015flar (Streams) Hakk\u0131nda Bilmeniz Gereken Her \u015eey<\/p>\n<p>Merhaba, Fatih Soysal burada. Bu makalede, Java&#8217;da ak\u0131\u015flar\u0131n (Streams) ne oldu\u011funu, nas\u0131l kullan\u0131ld\u0131\u011f\u0131n\u0131 ve neden \u00f6nemli olduklar\u0131n\u0131 detayl\u0131 bir \u015fekilde inceleyece\u011fiz.  Ak\u0131\u015flar, veriler \u00fczerinde fonksiyonel programlama yakla\u015f\u0131m\u0131yla i\u015flemler yapmam\u0131z\u0131 sa\u011flayan g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r.  Bu sayede kodumuz daha temiz, okunakl\u0131 ve performansl\u0131 hale gelir.  \u00d6ncelikle temel kavramlar\u0131 ele alarak, daha sonra ileri d\u00fczey konulara ge\u00e7ece\u011fiz.<\/p>\n<h2>Ak\u0131\u015flar Nedir?<\/h2>\n<p>Java 8 ile gelen Stream API, koleksiyonlar \u00fczerinde i\u015flemler ger\u00e7ekle\u015ftirmek i\u00e7in fonksiyonel bir yakla\u015f\u0131m sunar.  Basit\u00e7e anlatmak gerekirse, ak\u0131\u015flar veri ak\u0131\u015f\u0131n\u0131 temsil eder.  Bu veriler listeler, diziler veya di\u011fer kaynaklardan olabilir. Ak\u0131\u015flar, veriler \u00fczerinde paralel i\u015flem yapma imkan\u0131 sunarak performans\u0131 art\u0131r\u0131r.  Bunun yan\u0131 s\u0131ra,  okunabilirli\u011fi ve bak\u0131m\u0131 kolayla\u015ft\u0131ran bir kod stili sa\u011flar.  \u00d6rne\u011fin, b\u00fcy\u00fck bir veri k\u00fcmesi \u00fczerinde i\u015flem yaparken, ak\u0131\u015flar bu i\u015flemi daha verimli hale getirir.<\/p>\n<h2>Ak\u0131\u015f Operasyonlar\u0131<\/h2>\n<p>Ak\u0131\u015flar \u00fczerinde iki temel operasyon t\u00fcr\u00fc vard\u0131r: ara (intermediate) ve sonland\u0131r\u0131c\u0131 (terminal) operasyonlar. Ara operasyonlar ak\u0131\u015f\u0131 d\u00f6n\u00fc\u015ft\u00fcr\u00fcr ancak bir sonu\u00e7 \u00fcretmez. \u00d6rne\u011fin, filter(), map(), sorted() gibi operasyonlar ara operasyonlard\u0131r.  Sonland\u0131r\u0131c\u0131 operasyonlar ise ak\u0131\u015f\u0131 i\u015fleyerek bir sonu\u00e7 \u00fcretir.  collect(), forEach(), reduce(), count() gibi operasyonlar sonland\u0131r\u0131c\u0131 operasyonlard\u0131r.  Bu operasyonlar\u0131 birle\u015ftirerek karma\u015f\u0131k i\u015flemleri kolayca ger\u00e7ekle\u015ftirebilirsiniz.  \u00d6rne\u011fin, bir listedeki \u00e7ift say\u0131lar\u0131 filtreleyip karelerini hesaplayabilirsiniz.<\/p>\n<h3>\u00d6rnek: \u00c7ift Say\u0131lar\u0131n Kareleri<\/h3>\n<pre><code class=\"language-java\">\nList&lt;Integer&gt; numbers = Arrays.asList(1, 2, 3, 4, 5, 6);\n\nList&lt;Integer&gt; squaredEvenNumbers = numbers.stream()\n        .filter(n -> n % 2 == 0)\n        .map(n -> n * n)\n        .collect(Collectors.toList());\n\nSystem.out.println(squaredEvenNumbers); \/\/ [4, 16, 36]\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, \u00f6nce filter() ile \u00e7ift say\u0131lar se\u00e7ilir, daha sonra map() ile kareleri hesaplan\u0131r ve son olarak collect() ile bir listeye toplan\u0131r.  Bu kod, ak\u0131\u015flar\u0131n ne kadar temiz ve okunakl\u0131 bir \u015fekilde karma\u015f\u0131k i\u015flemleri ger\u00e7ekle\u015ftirdi\u011fini g\u00f6sterir.<\/p>\n<h2>Paralel Ak\u0131\u015flar<\/h2>\n<p>Ak\u0131\u015flar, paralel i\u015flem yetene\u011fi sayesinde performans art\u0131\u015f\u0131 sa\u011flar.  parallelStream() metodu ile ak\u0131\u015f\u0131 paralel hale getirebilirsiniz.  B\u00fcy\u00fck veri k\u00fcmeleri \u00fczerinde i\u015flem yaparken, paralel ak\u0131\u015flar \u00f6nemli bir performans art\u0131\u015f\u0131 sa\u011flayabilir. Ancak, paralel ak\u0131\u015flar\u0131 kullan\u0131rken dikkatli olmak gerekir. Baz\u0131 durumlarda, paralel i\u015flem yapmak performans\u0131 olumsuz etkileyebilir.<\/p>\n<h2>Ak\u0131\u015flar\u0131n Avantajlar\u0131<\/h2>\n<p>Ak\u0131\u015flar\u0131n en b\u00fcy\u00fck avantajlar\u0131ndan biri, fonksiyonel programlama yakla\u015f\u0131m\u0131yla daha temiz ve okunakl\u0131 kod yazmam\u0131z\u0131 sa\u011flamas\u0131d\u0131r.  Ayr\u0131ca, veriler \u00fczerinde paralel i\u015flem yapma imkan\u0131 sunarak performans art\u0131\u015f\u0131 sa\u011flar.  Okunabilirli\u011fi art\u0131r\u0131rken,  hata ay\u0131klama s\u00fcrecini de kolayla\u015ft\u0131r\u0131r.  Sonu\u00e7 olarak, daha az kodla daha fazla i\u015f yapman\u0131za olanak tan\u0131r.<\/p>\n<h2>Ak\u0131\u015flarla \u0130lgili \u0130pu\u00e7lar\u0131<\/h2>\n<p>Ak\u0131\u015flar\u0131 etkili bir \u015fekilde kullanmak i\u00e7in baz\u0131 ipu\u00e7lar\u0131na dikkat etmek gerekir.  \u00d6rne\u011fin, gereksiz ara i\u015flemlerden ka\u00e7\u0131nmak performans\u0131 art\u0131r\u0131r. Ayr\u0131ca, paralel ak\u0131\u015flar\u0131 kullan\u0131rken,  verilerin de\u011fi\u015ftirilebilir olmamas\u0131 ve thread g\u00fcvenli\u011finin sa\u011flanmas\u0131 \u00f6nemlidir.  Daha fazla bilgi i\u00e7in  <a href=\"https:\/\/fatihsoysal.com\">fatihsoysal.com<\/a>  sitesini ziyaret edebilirsiniz.  Bu konuda bir\u00e7ok yararl\u0131 kaynak mevcuttur ve s\u00fcrekli olarak g\u00fcncellenmektedir.<\/p>\n<p>Umar\u0131m bu makale, Java ak\u0131\u015flar\u0131 hakk\u0131nda size yard\u0131mc\u0131 olmu\u015ftur.  Daha fazla bilgi i\u00e7in  <a href=\"https:\/\/dev.to\/ezekiel_77\/all-you-need-to-know-about-streams-5a1m\">buraya<\/a>  bakabilirsiniz.  Herhangi bir sorunuz varsa l\u00fctfen yorumlarda belirtin!<\/p>\n<p><b>#Etiketler:<\/b> Ak\u0131\u015flar, Streams, Java, Fonksiyonel Programlama, Paralel \u0130\u015flem, Java 8, Performans, Kod Optimizasyonu, Programlama \u0130pu\u00e7lar\u0131,  Java Stream API<\/p>\n","protected":false},"excerpt":{"rendered":"Ak\u0131\u015flar (Streams) Hakk\u0131nda Bilmeniz Gereken Her \u015eey Merhaba, Fatih Soysal burada. Bu makalede, Java&#8217;da ak\u0131\u015flar\u0131n (Streams) ne oldu\u011funu,&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-8715","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ak\u0131\u015flar (Streams) Hakk\u0131nda Bilmeniz Gereken Her \u015eey<\/title>\n<meta name=\"description\" content=\"Merhaba, Fatih Soysal burada. Bu makalede, Java&#039;da ak\u0131\u015flar\u0131n (Streams) ne oldu\u011funu, nas\u0131l kullan\u0131ld\u0131\u011f\u0131n\u0131 ve neden \u00f6nemli olduklar\u0131n\u0131 detayl\u0131 bir \u015fekilde inceleyece\u011fiz. Ak\u0131\u015flar, veriler \u00fczerinde fonksiyonel programlama yakla\u015f\u0131m\u0131yla i\u015flemler yapmam\u0131z\u0131 sa\u011flayan g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Bu sayede kodumuz daha temiz, okunakl\u0131 ve performansl\u0131 hale gelir. \u00d6ncelikle temel kavramlar\u0131 ele alarak, daha sonra ileri d\u00fczey konulara ge\u00e7ece\u011fiz.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ak\u0131\u015flar (Streams) Hakk\u0131nda Bilmeniz Gereken Her \u015eey\" \/>\n<meta property=\"og:description\" content=\"Merhaba, Fatih Soysal burada. Bu makalede, Java&#039;da ak\u0131\u015flar\u0131n (Streams) ne oldu\u011funu, nas\u0131l kullan\u0131ld\u0131\u011f\u0131n\u0131 ve neden \u00f6nemli olduklar\u0131n\u0131 detayl\u0131 bir \u015fekilde inceleyece\u011fiz. Ak\u0131\u015flar, veriler \u00fczerinde fonksiyonel programlama yakla\u015f\u0131m\u0131yla i\u015flemler yapmam\u0131z\u0131 sa\u011flayan g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Bu sayede kodumuz daha temiz, okunakl\u0131 ve performansl\u0131 hale gelir. \u00d6ncelikle temel kavramlar\u0131 ele alarak, daha sonra ileri d\u00fczey konulara ge\u00e7ece\u011fiz.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2025-01-05T15:00:16+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"Ak\u0131\u015flar (Streams) Hakk\u0131nda Bilmeniz Gereken Her \u015eey\",\"datePublished\":\"2025-01-05T15:00:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/\"},\"wordCount\":582,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/#respond\"]}],\"copyrightYear\":\"2025\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/\",\"name\":\"Ak\u0131\u015flar (Streams) Hakk\u0131nda Bilmeniz Gereken Her \u015eey\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2025-01-05T15:00:16+00:00\",\"description\":\"Merhaba, Fatih Soysal burada. 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Bu sayede kodumuz daha temiz, okunakl\u0131 ve performansl\u0131 hale gelir. \u00d6ncelikle temel kavramlar\u0131 ele alarak, daha sonra ileri d\u00fczey konulara ge\u00e7ece\u011fiz.","og_url":"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/","og_site_name":"Kodlar\u0131n Gizemli D\u00fcnyas\u0131","article_published_time":"2025-01-05T15:00:16+00:00","author":"Fatih Soysal","twitter_card":"summary_large_image","twitter_misc":{"Yazan:":"Fatih Soysal","Tahmini okuma s\u00fcresi":"3 dakika"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/#article","isPartOf":{"@id":"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/"},"author":{"name":"Fatih Soysal","@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1"},"headline":"Ak\u0131\u015flar (Streams) Hakk\u0131nda Bilmeniz Gereken Her \u015eey","datePublished":"2025-01-05T15:00:16+00:00","mainEntityOfPage":{"@id":"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/"},"wordCount":582,"commentCount":0,"publisher":{"@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1"},"inLanguage":"tr","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/#respond"]}],"copyrightYear":"2025","copyrightHolder":{"@id":"https:\/\/fatihsoysal.com\/blog\/#organization"}},{"@type":"WebPage","@id":"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/","url":"https:\/\/fatihsoysal.com\/blog\/akislar-streams-hakkinda-bilmeniz-gereken-her-sey\/","name":"Ak\u0131\u015flar (Streams) Hakk\u0131nda Bilmeniz Gereken Her \u015eey","isPartOf":{"@id":"https:\/\/fatihsoysal.com\/blog\/#website"},"datePublished":"2025-01-05T15:00:16+00:00","description":"Merhaba, Fatih Soysal burada. 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