租赁车辆（多车）程序

package carsRental;
/**
 * 抽象类，机动车类
 * @author Administrator
 *
 */
public abstract class MotoVehicle {
    //不用private，protected直接调用
    protected String no;
    protected String brand;
    protected String color;
    protected int mileage;
    
    /*protected MotoVehicle(){}
    protected MotoVehicle(String No,String Brand,String Color,int Mileage){
        this.No=No;
        this.Brand=Brand;
        this.Color=Color;
        this.Mileage=Mileage;*/
    public MotoVehicle(){}
    public MotoVehicle(String no, String brand, String color, int mileage) {
        super();
        this.no = no;
        this.brand = brand;
        this.color = color;
        this.mileage = mileage;
    }
    
    public String getNo() {
        return no;
    }
    public void setNo(String no) {
        this.no = no;
    }
    public String getBrand() {
        return brand;
    }
    public void setBrand(String brand) {
        this.brand = brand;
    }
    public String getColor() {
        return color;
    }
    public void setColor(String color) {
        this.color = color;
    }
    public int getMileage() {
        return mileage;
    }
    public void setMileage(int mileage) {
        this.mileage = mileage;
    }
    /**
     * 计算租金
     * @param days
     * @return
     */
    public abstract double calcRent(int days);
//    public abstract int CalcRent(int days);
    
}

package carsRental;
/**
 * 轿车类，继承机动车类
 * @author Administrator
 *
 */
public final class Car extends MotoVehicle {
    private String type;
    /*@Override
    public final double CalcRent(int days) {
        if(type.equals("别克商务舱GL8")){
            int count=days*600;
            System.out.println("别克商务舱GL8的租赁价为"+count);
        }else if(type.equals("宝马550i")){
            int count=days*500;
            System.out.println("车牌号为"+super.getNo()+"宝马550i的租赁价为"+count);
        }else if(type.equals("别克林荫大道")){
            int count=days*300;
            System.out.println("别克林荫大道的租赁价为"+count);
        }
        return days;
    }*/
    public Car(){}
    public Car(String no, /*String brand, String color, int mileage,*/String type){
//        super(no,brand,color,mileage);
        this.no=no;
        this.type=type;
    }
    public String getType() {
        return type;
    }
    public void setType(String type) {
        this.type = type;
    }
    public double calcRent(int days){
        double total=0;
        if("别克商务舱GL8".equals(type)){
            total=600*days;
            System.out.println("车牌号为"+super.getNo()+"别克商务舱GL8的租赁价为"+total);
        }else if("宝马550i".equals(type)){
            total=500*days;
            System.out.println("车牌号为"+super.getNo()+"宝马550i的租赁价为"+total);
        }else if("别克林荫大道".equals(type)){
            total=300*days;
            System.out.println("车牌号为"+super.getNo()+"别克林荫大道的租赁价为"+total);
        }
        return total;
    }
}

package carsRental;
/**
 * 客车类，继承机动车类
 * @author Administrator
 *
 */
public final class Bus extends MotoVehicle {
    private int seatCount;
    /*@Override
    public final double CalcRent(int days) {
        if(seatCount<=16){
            int count=days*800;
            System.out.println("客车的租赁价格为"+count);
        }else if(seatCount>16){
            int count=days*1500;
            System.out.println("客车的租赁价格为"+count);
        }
        return days;
    }*/
    public Bus(){}
    public Bus(String no,int seatcount){
        this.no=no;
        this.seatCount=seatcount;
    }
    public int getSeatCount() {
        return seatCount;
    }
    public void setSeatCount(int seatCount) {
        this.seatCount = seatCount;
    }
    @Override
    public double calcRent(int days) {
        if(seatCount<=16){
            double count=800*days;
            System.out.println("车牌号为"+super.getNo()+"客车的租赁价为"+count);
            return 800*days;
            
        }else{
            double count=800*days;
            System.out.println("车牌号为"+super.getNo()+"客车的租赁价为"+count);
            return 1500*days;
            
        }
    }
}

package carsRental;

import java.util.Scanner;

public class TestMotoVehicle {
    public static void main(String[]args){
//        Car car=new Car("京NY28588","宝马550i"/*, null, 0, null*/);
//        car.CalcRent(12);
//        Car car=new Car();
//        Bus bus=new Bus();
        //利用机动车作为数组类型
        MotoVehicle[]motos=new MotoVehicle[4];
        motos[0]=new Car("京NY28588","宝马550i");
        motos[1]=new Car("京NNN328","宝马550i");
        motos[2]=new Car("京NY28588","别克林荫大道");
        motos[3]=new Bus("沪AK47633",34);
        //计算租车租金
//        public int CalcTotalRent(MotoVehicle[]motos){
            double sumPrice=0;
            for(int i=0;i<motos.length;i++){
            MotoVehicle moto=motos[i];
            sumPrice+=moto.calcRent(1);
//            totalRent=+motos[i].CalcRent(1);
        }
            System.out.println("总租金为"+sumPrice);
//            return totalRent;
    }
}