Which will declare the method that forces a subclass to implement it？（）A、 public double methoda （）：B、 static void methoda（double d1） {}C、 public native double methoda （）：D、 abstract public foid methoda （）：E、 protected void methoda （double d1） {}
Which will declare the method that forces a subclass to implement it？（）
- A、 public double methoda （）：
- B、 static void methoda（double d1） {}
- C、 public native double methoda （）：
- D、 abstract public foid methoda （）：
- E、 protected void methoda （double d1） {}
相关考题：
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