[問題] 搞不懂static

看板java作者wtchen (沒有存在感的人)時間9年前 (2014/12/20 00:34)推噓5(5推 0噓 17→)

留言22則, 7人參與討論串1/1

例題如下： class A { public static void doSth(){ System.out.println("Doing something in A"); } } class B extends A { public static void doSth(){ System.out.println("Doing something in B"); } } class C extends B { public static void doSth(){ System.out.println("Doing something in C"); } } class test { public static void main(String [] args) { A.doSth(); B.doSth(); C.doSth(); A aInstance = new B(); B bInstance = new C(); C cInstance = new C(); aInstance.doSth(); bInstance.doSth(); cInstance.doSth(); } } 執行結果是 Doing something in A Doing something in B Doing something in C Doing something in A Doing something in B Doing something in C 前三個我可以理解，後三個我就不懂了，static在這裡是起什麼樣的作用呢？跪求高手解惑，感謝... -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 84.193.161.32 ※ 文章網址: http://www.ptt.cc/bbs/java/M.1419006844.A.98B.html

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12/20 00:55, , 1^F

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12/20 00:56, , 3^F

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