试题详情
- 单项选择题 1. class Super { 2. public float getNum() { return 3.0f; } 3. } 4. 5. public class Sub extends Super { 6. 7. } Which method, placed at line6, causes compilation to fail?()
A、 public void getNum(){}
B、 public void getNum(double d){}
C、 public float getNum() { return 4.0f; }
D、 public double getNum(float d) { return 4.0d; }
- A
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