Nesne Tabanl\u0131 Programlamada Miras (Inheritance)<\/p>\n
Nesne Tabanl\u0131 Programlama (OOP) paradigmas\u0131n\u0131n temel ta\u015flar\u0131ndan biri olan miras (inheritance), kod tekrar\u0131n\u0131 azaltarak ve kodun yeniden kullan\u0131labilirli\u011fini art\u0131rarak yaz\u0131l\u0131m geli\u015ftirmeyi kolayla\u015ft\u0131r\u0131r. K\u0131saca, miras, bir s\u0131n\u0131f\u0131n (alt s\u0131n\u0131f veya t\u00fcretilmi\u015f s\u0131n\u0131f) ba\u015fka bir s\u0131n\u0131ftan (\u00fcst s\u0131n\u0131f veya temel s\u0131n\u0131f) \u00f6zelliklerini ve davran\u0131\u015flar\u0131n\u0131 devralmas\u0131n\u0131 sa\u011flar. Bu sayede, yeni bir s\u0131n\u0131f olu\u015ftururken, s\u0131f\u0131rdan ba\u015flamak yerine, var olan bir s\u0131n\u0131f\u0131 temel alarak \u00e7al\u0131\u015fabiliriz. Bu durum, hem geli\u015ftirme s\u00fcrecini h\u0131zland\u0131r\u0131r hem de kodun daha tutarl\u0131 ve y\u00f6netilebilir olmas\u0131n\u0131 sa\u011flar.<\/p>\n
Miras\u0131n en \u00f6nemli faydalar\u0131ndan biri, kodun yeniden kullan\u0131labilirli\u011fidir. \u00d6rne\u011fin, bir “Hayvan” s\u0131n\u0131f\u0131 olu\u015fturdu\u011fumuzu ve bu s\u0131n\u0131f\u0131n “ad” ve “t\u00fcr” gibi \u00f6zellikleri, “ye” ve “uyku” gibi metodlar\u0131 i\u00e7erdi\u011fini d\u00fc\u015f\u00fcnelim. \u015eimdi, “Kedi” veya “K\u00f6pek” gibi yeni hayvan s\u0131n\u0131flar\u0131 olu\u015fturmak istiyoruz. Bu s\u0131n\u0131flar\u0131n da “ad” ve “t\u00fcr” gibi \u00f6zellikler i\u00e7ermesi gerekiyor. Miras sayesinde, “Kedi” ve “K\u00f6pek” s\u0131n\u0131flar\u0131n\u0131 “Hayvan” s\u0131n\u0131f\u0131ndan t\u00fcreterek, bu \u00f6zellikleri tekrar yazmak zorunda kalmay\u0131z. Bunlar\u0131 “Hayvan” s\u0131n\u0131f\u0131ndan devral\u0131rlar. Bu, hem zaman kazand\u0131r\u0131r hem de kodun tutarl\u0131l\u0131\u011f\u0131n\u0131 sa\u011flar.<\/p>\n
Ayr\u0131ca, miras sayesinde, kodun daha d\u00fczenli ve okunabilir olmas\u0131 sa\u011flan\u0131r. Benzer \u00f6zelliklere sahip s\u0131n\u0131flar hiyerar\u015fik bir \u015fekilde organize edilebilir, bu da kodun anla\u015f\u0131lmas\u0131n\u0131 kolayla\u015ft\u0131r\u0131r. \u00d6rne\u011fin;<\/strong> bir “Araba” s\u0131n\u0131f\u0131ndan t\u00fcretilen “Spor Araba” ve “Kamyon” s\u0131n\u0131flar\u0131, “Araba” s\u0131n\u0131f\u0131n\u0131n \u00f6zelliklerini payla\u015f\u0131rken, kendilerine \u00f6zg\u00fc \u00f6zellikleri de i\u00e7erebilirler. Bu, kodun daha mod\u00fcler ve bak\u0131m\u0131 kolay olmas\u0131n\u0131 sa\u011flar.<\/p>\n Programlama dillerinde farkl\u0131 miras t\u00fcrleri bulunur. Bunlardan en yayg\u0131n olanlar\u0131 tekli miras (single inheritance) ve \u00e7oklu miras (multiple inheritance)’t\u0131r. Tekli miras’ta, bir s\u0131n\u0131f sadece bir s\u0131n\u0131ftan miras alabilir. \u00c7oklu miras’ta ise, bir s\u0131n\u0131f birden fazla s\u0131n\u0131ftan miras alabilir. Ancak, \u00e7oklu miras\u0131n karma\u015f\u0131kl\u0131k yaratabilece\u011fi ve baz\u0131 durumlarda sorunlara yol a\u00e7abilece\u011fi unutulmamal\u0131d\u0131r. Bu y\u00fczden, bir\u00e7ok programlama dili tekli miras\u0131 tercih eder.<\/p>\n Yukar\u0131daki Java \u00f6rne\u011finde, Miras, nesne tabanl\u0131 programlaman\u0131n en g\u00fc\u00e7l\u00fc \u00f6zelliklerinden biridir. Ancak, a\u015f\u0131r\u0131 kullan\u0131ld\u0131\u011f\u0131nda karma\u015f\u0131kl\u0131k yaratabilir. Dolay\u0131s\u0131yla, miras\u0131n do\u011fru ve dikkatli bir \u015fekilde kullan\u0131lmas\u0131 \u00f6nemlidir. Daha fazla bilgi i\u00e7in fatihsoysal.com<\/a> adresini ziyaret edebilirsiniz. Ayr\u0131ca, konu hakk\u0131nda daha detayl\u0131 bilgi i\u00e7in bu kayna\u011fa<\/a> da g\u00f6z atabilirsiniz.<\/p>\n #Etiketler: miras, inheritance, nesne tabanl\u0131 programlama, oop, programlama, yaz\u0131l\u0131m, kodlama, polymorphism, encapsulation, abstraction, java, s\u0131n\u0131f, alt s\u0131n\u0131f, \u00fcst s\u0131n\u0131f, kod tekrar\u0131, yeniden kullan\u0131labilirlikMiras T\u00fcrleri<\/h2>\n
\u00d6rnek: Java’da Miras<\/h2>\n
\n\/\/ \u00dcst s\u0131n\u0131f (Hayvan)\nclass Hayvan {\n String ad;\n String tur;\n\n Hayvan(String ad, String tur) {\n this.ad = ad;\n this.tur = tur;\n }\n\n void sesCikar() {\n System.out.println(\"Bir ses \u00e7\u0131kard\u0131.\");\n }\n}\n\n\/\/ Alt s\u0131n\u0131f (Kedi)\nclass Kedi extends Hayvan {\n Kedi(String ad) {\n super(ad, \"Kedi\");\n }\n\n void miyavla() {\n System.out.println(\"Miyav!\");\n }\n}\n\npublic class Main {\n public static void main(String[] args) {\n Kedi kedi = new Kedi(\"Tekir\");\n kedi.sesCikar(); \/\/ Hayvan s\u0131n\u0131f\u0131ndan devral\u0131nan metod\n kedi.miyavla();\n }\n}\n<\/code><\/pre>\nKedi<\/code> s\u0131n\u0131f\u0131 Hayvan<\/code> s\u0131n\u0131f\u0131ndan miras almaktad\u0131r. Kedi<\/code> s\u0131n\u0131f\u0131, Hayvan<\/code> s\u0131n\u0131f\u0131n\u0131n \u00f6zelliklerini (ad<\/code>, t\u00fcr<\/code>) ve metodunu (sesCikar<\/code>) devral\u0131r ve kendine \u00f6zg\u00fc bir metod (miyavla<\/code>) da ekler. Bu, kodun tekrar\u0131n\u0131 \u00f6nler ve kodun daha d\u00fczenli olmas\u0131n\u0131 sa\u011flar.<\/p>\n
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