作业5（抽象类作业）含答案

package cn.comm; public class Car extends Vehicle { public Car( String name ){ super( name ); System.out.println( \有参--- \ } public Car(){ } @Override public void NoOfWheels() { // TODO Auto-generated method stub System.out.println( \我是\我有四个轮子\ } } package cn.comm; public class Motorbike extends Vehicle { public Motorbike( String name ){ super( name ); System.out.println( \有参--- \ } public Motorbike(){ } @Override public void NoOfWheels() { // TODO Auto-generated method stub System.out.println( \我是\我有两个个轮子\ } } package cn.com.test2; import cn.comm.Car; import cn.comm.Motorbike; import cn.comm.Vehicle; public class TestVehicle { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Car car = new Car( \ car.NoOfWheels(); Motorbike mot = new Motorbike( \永久牌自行车\mot.NoOfWheels(); Vehicle v = new Car( \奔驰\ v.NoOfWheels(); } }