试题详情
- 单项选择题 class Bird { static void talk() { System.out.print("chirp "); } } class Parrot extends Bird { static void talk() { System.out.print("hello "); } public static void main(String [] args) { Bird [] birds = {new Bird(), new Parrot()}; for( Bird b : birds) b.talk(); } } 结果为:()
A、chirp chirp
B、chirp hello
C、hello hello
D、编译失败
- A
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