car.java

孙鑫JAVA从入门到精通配套练习程序。所有程序都实际运行过

class Car
{
	class Wheel
	{
	}
}

class PlainWheel extends Car.Wheel
{
	PlainWheel(Car car)
	{
		car.super();
	}
	public static void main(String[] args)
	{
		Car car = new Car();
		PlainWheel p = new PlainWheel(car);
	}
}