首页/ 题库 / [单选题]1. class Animal ｛ An的答案

1. class Animal ｛ Animal getOne（） ｛ return new Animal（）； ｝ ｝  2. class Dog extends Animal ｛  3. // insert code here   4. ｝  5.  6. class AnimalTest ｛  7. public static void main（String [] args） ｛  8. Animal [] animal ＝ ｛ new Animal（）， new Dog（） ｝ ；  9. for（ Animal a ： animal） ｛  10. Animal x ＝ a.getOne（）；  11. ｝  12. ｝  13. ｝  和代码：  3a. Dog getOne（） ｛  return new Dog（）；  ｝  3b. Animal getOne（） ｛  return new Dog（）；  ｝  第 3 行中插入的哪项将编译且运行无异常？（） 

单选题
2022-01-10 01:23
A、3a行
B、3b行
C、3a行或3b行
D、既非3a，也非3b
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正确答案
D
试题解析
标签： CMS专题 Java认证考试 Java认证考试综合练习
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public static void main（String [] java） {  
for （int Java = 1； Java 〈 java.length； Java++）  
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}  
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java java java java java  
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