关于继承的经典问题

public class Demo {
public static void main(String[] args) {
new Child();
}
}

class Child extends Parent{
private int i = 22;
public Child(){
i = 222;
}

     public void display(){
              System.out.println(i);
     }

}

class Parent{

     private int i = 2;
     public Parent(){
              display();
     }

     public void display(){
              System.out.println(i);
     }

}