{"id":7660,"date":"2024-12-25T18:30:13","date_gmt":"2024-12-25T15:30:13","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/javada-giris-dogrulamasi-koruma-kosullariyla-ustalasma\/"},"modified":"2024-12-25T18:30:13","modified_gmt":"2024-12-25T15:30:13","slug":"javada-giris-dogrulamasi-koruma-kosullariyla-ustalasma","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/javada-giris-dogrulamasi-koruma-kosullariyla-ustalasma\/","title":{"rendered":"Java&#8217;da Giri\u015f Do\u011frulamas\u0131: Koruma Ko\u015fullar\u0131yla Ustala\u015fma"},"content":{"rendered":"<p><body><\/p>\n<p>Java&#8217;da Giri\u015f Do\u011frulamas\u0131: Koruma Ko\u015fullar\u0131yla Ustala\u015fma<\/p>\n<p>Yaz\u0131l\u0131m geli\u015ftirmede, g\u00fcvenilir ve sa\u011flam uygulamalar olu\u015fturmak i\u00e7in giri\u015f do\u011frulamas\u0131 son derece \u00f6nemlidir.  Java gibi g\u00fc\u00e7l\u00fc bir dilde bile, beklenmedik giri\u015f verileri uygulaman\u0131z\u0131n \u00e7\u00f6kmesine veya g\u00fcvenlik a\u00e7\u0131klar\u0131na yol a\u00e7abilir.  Bu makalede, Java&#8217;da giri\u015f do\u011frulamas\u0131n\u0131 nas\u0131l iyile\u015ftirebilece\u011finizi ve kodunuzu daha okunakl\u0131 ve s\u00fcrd\u00fcr\u00fclebilir hale getirmeyi nas\u0131l ba\u015farabilece\u011finizi ele alaca\u011f\u0131z.  Bunun i\u00e7in de <strong>koruma ko\u015fullar\u0131 (guard clauses)<\/strong> tekni\u011fini kullanaca\u011f\u0131z.<\/p>\n<h2>Koruma Ko\u015fullar\u0131 Nedir?<\/h2>\n<p>Koruma ko\u015fullar\u0131, bir fonksiyonun veya metodun i\u00e7indeki kodun belirli bir ko\u015fulu sa\u011flamamas\u0131 durumunda erken bir \u015fekilde \u00e7\u0131k\u0131\u015f yapmas\u0131n\u0131 sa\u011flayan ko\u015fullu ifadelerdir.  Bu sayede, uzun ve karma\u015f\u0131k kod bloklar\u0131n\u0131n i\u00e7inde derinlere inmeden hatalar\u0131 yakalayabilir ve uygun bir \u015fekilde yan\u0131t verebiliriz.  \u00d6rne\u011fin, bir fonksiyona ge\u00e7ersiz bir giri\u015f verildi\u011finde, koruma ko\u015fulu sayesinde fonksiyon hemen hata mesaj\u0131 d\u00f6nd\u00fcrebilir veya istisna f\u0131rlatabilir.  Bu, kodun okunabilirli\u011fini art\u0131r\u0131rken, ayn\u0131 zamanda hata ay\u0131klama ve bak\u0131m i\u015flemlerini de kolayla\u015ft\u0131r\u0131r.  Ba\u015fka bir deyi\u015fle, kodun geri kalan\u0131n\u0131n gereksiz yere \u00e7al\u0131\u015fmas\u0131n\u0131 \u00f6nler ve olas\u0131 hatalar\u0131 erken a\u015famada yakalar.<\/p>\n<h2>Java&#8217;da Koruma Ko\u015fullar\u0131n\u0131n Uygulamas\u0131<\/h2>\n<p>\u015eimdi, Java&#8217;da koruma ko\u015fullar\u0131n\u0131 nas\u0131l kullanaca\u011f\u0131m\u0131z\u0131 birka\u00e7 \u00f6rnek ile inceleyelim.  \u00d6rne\u011fin, bir kullan\u0131c\u0131n\u0131n ya\u015f\u0131n\u0131 do\u011frulamak istedi\u011fimizi d\u00fc\u015f\u00fcnelim:<\/p>\n<pre><code class=\"language-java\">\npublic int calculateAge(int birthYear, int currentYear) {\n  \/\/ Koruma ko\u015fulu: Ge\u00e7ersiz do\u011fum y\u0131l\u0131 kontrol\u00fc\n  if (birthYear > currentYear) {\n    throw new IllegalArgumentException(\"Do\u011fum y\u0131l\u0131 ge\u00e7erli y\u0131l\u0131n \u00f6ncesinde olmal\u0131d\u0131r.\");\n  }\n  \/\/ Koruma ko\u015fulu: Ge\u00e7ersiz y\u0131l kontrol\u00fc\n  if (birthYear <= 0 || currentYear <= 0) {\n    throw new IllegalArgumentException(\"Y\u0131llar pozitif de\u011ferler olmal\u0131d\u0131r.\");\n  }\n  return currentYear - birthYear;\n}\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, iki koruma ko\u015fulu kullanarak ge\u00e7ersiz giri\u015f de\u011ferlerini ele al\u0131yoruz.  E\u011fer do\u011fum y\u0131l\u0131 ge\u00e7erli y\u0131ldan b\u00fcy\u00fckse veya y\u0131llar negatifse, bir <code>IllegalArgumentException<\/code> f\u0131rlat\u0131yoruz.  Bu sayede, fonksiyonun geri kalan\u0131n\u0131n gereksiz yere \u00e7al\u0131\u015fmas\u0131n\u0131 \u00f6nl\u00fcyoruz.  Hata y\u00f6netimini de bu \u015fekilde daha iyi kontrol alt\u0131na alm\u0131\u015f oluyoruz.<\/p>\n<h2>Koruma Ko\u015fullar\u0131n\u0131n Avantajlar\u0131<\/h2>\n<p>Koruma ko\u015fullar\u0131n\u0131n kullan\u0131lmas\u0131 bir\u00e7ok avantaj sa\u011flar.  Bunlardan baz\u0131lar\u0131 \u015funlard\u0131r:<\/p>\n<ul>\n<li><strong>Okunabilirlik:<\/strong> Kod daha d\u00fczenli ve anla\u015f\u0131l\u0131r hale gelir.<\/li>\n<li><strong>Bak\u0131m:<\/strong> Hata ay\u0131klama ve g\u00fcncelleme i\u015flemleri kolayla\u015f\u0131r.<\/li>\n<li><strong>Hata Y\u00f6netimi:<\/strong> Hatalar daha erken a\u015famada yakalan\u0131r ve d\u00fczg\u00fcn \u015fekilde y\u00f6netilir.<\/li>\n<li><strong>Performans:<\/strong> Gereksiz kod y\u00fcr\u00fct\u00fclmesi \u00f6nlenir.<\/li>\n<\/ul>\n<p>Sonu\u00e7 olarak, Java'da giri\u015f do\u011frulamas\u0131n\u0131 iyile\u015ftirmek i\u00e7in koruma ko\u015fullar\u0131n\u0131 kullanmak, kodunuzun kalitesini ve g\u00fcvenilirli\u011fini \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131r\u0131r.  Bu basit ama etkili teknik ile, daha sa\u011flam ve s\u00fcrd\u00fcr\u00fclebilir uygulamalar geli\u015ftirebilirsiniz.<\/p>\n<p>Daha fazla bilgi i\u00e7in <a href=\"https:\/\/fatihsoysal.com\">Fatih Soysal'\u0131n web sitesini<\/a> ziyaret edebilirsiniz.  Konu ile ilgili faydal\u0131 bulabilece\u011finiz ba\u015fka bir kaynak ise <a href=\"https:\/\/dev.to\/agitrubard\/mastering-input-validation-in-java-with-guard-clauses-1in7\">buradaki \u0130ngilizce makale<\/a>dir.<\/p>\n<h3>#Etiketler<\/h3>\n<p>Java, Giri\u015f Do\u011frulama, Koruma Ko\u015fullar\u0131, Guard Clauses, Hata Y\u00f6netimi, Kod Kalitesi, G\u00fcvenlik, Programlama, Yaz\u0131l\u0131m Geli\u015ftirme, Fatih Soysal<\/p>\n<p><\/body><br \/>\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"Java&#8217;da Giri\u015f Do\u011frulamas\u0131: Koruma Ko\u015fullar\u0131yla Ustala\u015fma Yaz\u0131l\u0131m geli\u015ftirmede, g\u00fcvenilir ve sa\u011flam uygulamalar olu\u015fturmak i\u00e7in giri\u015f do\u011frulamas\u0131 son derece&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-7660","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>Java&#039;da Giri\u015f Do\u011frulamas\u0131: Koruma Ko\u015fullar\u0131yla Ustala\u015fma<\/title>\n<meta name=\"description\" content=\"Yaz\u0131l\u0131m geli\u015ftirmede, g\u00fcvenilir ve sa\u011flam uygulamalar olu\u015fturmak i\u00e7in giri\u015f do\u011frulamas\u0131 son derece \u00f6nemlidir. Java gibi g\u00fc\u00e7l\u00fc bir dilde bile, beklenmedik giri\u015f verileri uygulaman\u0131z\u0131n \u00e7\u00f6kmesine veya g\u00fcvenlik a\u00e7\u0131klar\u0131na yol a\u00e7abilir. Bu makalede, Java&#039;da giri\u015f do\u011frulamas\u0131n\u0131 nas\u0131l iyile\u015ftirebilece\u011finizi ve kodunuzu daha okunakl\u0131 ve s\u00fcrd\u00fcr\u00fclebilir hale getirmeyi nas\u0131l ba\u015farabilece\u011finizi ele alaca\u011f\u0131z. 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Bu makalede, Java&#039;da giri\u015f do\u011frulamas\u0131n\u0131 nas\u0131l iyile\u015ftirebilece\u011finizi ve kodunuzu daha okunakl\u0131 ve s\u00fcrd\u00fcr\u00fclebilir hale getirmeyi nas\u0131l ba\u015farabilece\u011finizi ele alaca\u011f\u0131z. 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