答答租车系统练习（Java，接口版，子类没有封装）

把分的类别减少，并且让没有封装之后，代码简单多了。用了一会又写了一个接口版的。

package lu.zhang;

public abstract class allCar implements ICarryCargo,ICarryPassenger{
    public String name;
    public float price;
    public float cargo;
    public int passenger;

    //getter and setter
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public float getPrice() {
        return price;
    }

    public void setPrice(float price) {
        this.price = price;
    }

    //车辆能否载人/载货的标志
    public abstract boolean ifCarryCargo();
    public abstract boolean ifCarryPassenger();
    //车的信息
    public void info(){
        System.out.println("老司机来告诉你这是一辆车[che,一声]:)");
    }
    //constructor
    public allCar(String name, float price){
        this.name=name;
        this.price=price;
    }

    //接口函数重写
    @Override
    public void setPassengerNum(int passengerNum) {
        // TODO Auto-generated method stub
        this.passenger=passengerNum;
    }
    @Override
    public int getPassengerNum() {
        // TODO Auto-generated method stub
        return this.passenger;
    }
    @Override
    public void setCargoNum(float cargoNum) {
        // TODO Auto-generated method stub
        this.cargo=cargoNum;
    }
    @Override
    public float getCargoNum() {
        // TODO Auto-generated method stub
        return this.cargo;
    }
}

package lu.zhang;

public class Coach extends allCar{

    //constructor
    public Coach(String name, float price) {
        super(name, price);
        // TODO Auto-generated constructor stub
    }
    @Override
    public boolean ifCarryCargo() {
        // TODO Auto-generated method stub
        return false;
    }
    @Override
    public boolean ifCarryPassenger() {
        // TODO Auto-generated method stub
        return true;
    }

    public void info(){
        System.out.println("名称:"+name+"  价格:"+price+"元/天  载客量:"+passenger+"人");
    }

}

package lu.zhang;

public class Pickup extends allCar{

    //constructor
    public Pickup(String name, float price) {
        super(name, price);
        // TODO Auto-generated constructor stub
    }
    @Override
    public boolean ifCarryCargo() {
        // TODO Auto-generated method stub
        return true;
    }
    @Override
    public boolean ifCarryPassenger() {
        // TODO Auto-generated method stub
        return true;
    }

    public void info(){
        System.out.println("名称:"+name+"  价格:"+price+"元/天  载客量"+passenger+"人  载货量:"+cargo+"吨");
    }

}

package lu.zhang;

public class Truck extends allCar{

    //constructor
    public Truck(String name, float price) {
        super(name, price);
        // TODO Auto-generated constructor stub
    }
    @Override
    public boolean ifCarryCargo() {
        // TODO Auto-generated method stub
        return true;
    }
    @Override
    public boolean ifCarryPassenger() {
        // TODO Auto-generated method stub
        return false;
    }

    public void info(){
        System.out.println("名称:"+name+"  价格:"+price+"元/天  载货量"+cargo+"吨");
    }
}

package lu.zhang;

public interface ICarryCargo {
    public void setCargoNum(float cargoNum);
    public float getCargoNum();
}

package lu.zhang;

public interface ICarryPassenger {

    public void setPassengerNum(int passengerNum);
    public int getPassengerNum();
}

package lu.zhang;
import java.util.Scanner;
public class Test {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        //首先初始化现有的车辆数据
                //使用多态
        allCar car1=new Coach("奥迪A4 ",500);
        car1.setPassengerNum(4);
        allCar car2=new Coach("马自达6",400);
        car2.setPassengerNum(4);
        allCar car3=new Pickup("皮卡雪6",450);
        car3.setPassengerNum(4);
        car3.setCargoNum(2);
        allCar car4=new Coach("金龙",800);    
        car4.setPassengerNum(4);
        allCar car5=new Truck("松花江",400);
        car5.setCargoNum(2);
        allCar car6=new Truck("依维柯",1000);
        car6.setCargoNum(2);
        allCar carArray[]={car1,car2,car3,car4,car5,car6};

        //欢迎、提示信息
        System.out.println("欢迎来到答答租车系统！");
        System.out.println("租车请按“1”,退出请按任意键并回车");
        //等待用户键盘输入
        Scanner in=new Scanner(System.in);
        int start=in.nextInt();
        if(start==1){
            //展示所有车辆信息
            int cnt=0;
            for(allCar carx:carArray){
                cnt++;
                System.out.print(cnt+"： ");
                carx.info();
            }
            //输入要租的车数
            allCar[] clientArray=new allCar[6];
            int[] numArray=new int[]{0,0,0,0,0,0};

            for(cnt=0;cnt<6;){
                System.out.println("请您输入要租的车的序号："); 
                in=new Scanner(System.in);
                int num=in.nextInt();
                if(num<=0num>6) break;
                clientArray[cnt]=carArray[num-1];

                System.out.println("请您输入要租的车的数量："); 

                int num1=in.nextInt();
                if(num1==0) break;
                numArray[cnt]=num1;

                System.out.println("请您输入要租的车的天数："); 

                int num2=in.nextInt();
                if(num2==0) break;
                numArray[cnt]*=num2;
                cnt++;
                System.out.println("结束请按0,继续请按任意键");
                int num3=in.nextInt();
                if(num3==0) break;

            }
            System.out.println(numArray[0]+numArray[1]);
            //输出总金额，总载客/载货量
            int sumPassenger=0;
            int sumFreight=0;   
            float Amount=0;

            for(int i=0;i<cnt;i++){
                if (clientArray[i].ifCarryCargo())
                    sumFreight+=clientArray[i].cargo;
                if(clientArray[i].ifCarryPassenger())
                    sumPassenger+=clientArray[i].passenger;
                Amount+=numArray[i]*clientArray[i].getPrice();
            }
            System.out.println("总金额:"+Amount+"  总载客:"+sumPassenger+"  总载货:"+sumFreight);

        }
        else{
            System.out.println("退出租车系统");
        }

    }

}