java - 如果被覆盖，我如何告诉编译器必须调用 Java 函数？

Question

在 Android 中，有一种非常标准的方法可以让您的系统类与它们的系统类交互：

@Override
public void onResume() {
    super.onResume ();
    //your code here
}

当您在 Eclipse 中键入“onr”然后控制空间时，存根会像这样填写，并在调用中使用 super 方法。您将如何表明您想从超类中执行此操作？

Answer 1

There are two cases for calling a function in a subclass from the superclass:

• When the superclass or one of its ancestors has declared the function that you want to call - simply call that function: the override is going to be called.
• When the function is first introduced in a subclass - you need an explicit cast in your call. This option almost always indicates a problem in your design, and should be avoided.

Answer 2

when implementing subclassing, you can override any public or protected method, the default behavior of a overridden method in Eclipse is to do what the parent class does, therefor the automatic code for any method that's overriden is to call the parent via super.