已知类的集成关系如下:class Teacher;class EnglishTeacher extends Teacher;class MathTeacher extends Teacher;那么以下代码能够编译通过的是?
选项:
A:Teacher teacher = new EnglishTeacher();;
B:EnglishTeacher teacher = new MathTeacher();;
C:MathTeacher teacher = new EnglishTeacher();;
D:EnglishTeacher teacher = new Teacher();
发布时间:2024-05-24 12:39:18