Java覆盖私有函数不显示多态行为

Java Override a private function Dont showing polymorphic behaviour(Java覆盖私有函数不显示多态行为)

问题描述

public class Shape
{

final private void print() 
{
    System.out.println("in class Shape");
}

  public static void main(String[] args)
  {

    Shape shape=new Rectangle();
    shape.print();
    //calling shape class function 
    //giving output in class shape


  }

}

 public class Rectangle extends Shape
 {
    public void print() 
    {
    System.out.println("in class Rectangle");
    //super.print();

    }
  }

问题:为什么私有函数不显示多态行为?我们还在覆盖最终方法吗?为什么调用它的基类函数?

Ques: why private function don't show polymorphic behaviour ? and we are still overriding final method? its calling base class funtion why?

推荐答案

私有函数不可见，也不能从其子级调用；因此，这是两个完全不同的功能.从子类的角度来看，没有什么可以覆盖的，因为它不知道父类甚至有一个 print() 函数.

A Private function is not visible nor callable from its children; hence these are two completely different functions. There is nothing to overwrite from the perspective of the child class, because it is not aware that the parent even has a print() function.

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