package com.kk.innerClass; /**  * 继承内部类  * */ public class Car {
   class Wheel {
       } } class PlaneWheel extends Car.Wheel {
   public PlaneWheel(Car car) {
           car.super();     } public static void main(String[] args) {
           Car car = new Car();         PlaneWheel pw = new PlaneWheel(car);     } }