java第二季综合练习，答答租车系统

Car.java

package com.kj;

public class Car {
    public int Carnum;
    public String Carname;//汽车名字
    public int Carvalue;//汽车价格
    public int loadpeople;//载客量
    public int loadgoods;//载货量
//获取车的编号    
public int getCarnum(){
    return Carnum;
}
//获取车的名字
public String getCarname(){
    return Carname;
}
//获取车的价格
public int getCarvalue(){
    return Carvalue;
}
//获取车的载客量
public int getloadpeople(){
    return loadpeople;
}
//获取车的载货量
public int getloadgoods(){
    return loadgoods;
}

}

peoplecar.java

package com.kj;

public class peoplecar extends Car {
    public peoplecar(int Carnum,String Carname,int Carvalue,int Carloadpeople){
        this.Carnum=Carnum;
        this.Carname=Carname;
        this.Carvalue=Carvalue;
        this.loadpeople=Carloadpeople;
    }
}

goodscar.java

package com.kj;

public class goodscar extends Car {
    public goodscar(int Carnum,String Carname,int Carvalue,int Carloadgoods){
        this.Carnum=Carnum;
        this.Carname=Carname;
        this.Carvalue=Carvalue;
        this.loadgoods=Carloadgoods;
    }
}

pickup.java

package com.kj;

public class pickup extends Car {
    public pickup(int Carnum,String Carname,int Carvalue,int Carloadpeople,int Carloadgoods){
        this.Carnum=Carnum;
        this.Carname=Carname;
        this.Carvalue=Carvalue;
        this.loadpeople=Carloadpeople;
        this.loadgoods=Carloadgoods;
    }
}

initial.java

package com.kj;
import java.util.Scanner;

public class initial {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("欢迎使用答答租车系统：");
        System.out.println("您是否要租车：1是   0否");
        //定义数组，实例化车的对象
        Car[] car={
                new peoplecar(1,"奥迪A4",500,4),
                new peoplecar(2,"马自达6",400,4),
                new pickup(3,"皮卡雪6",450,4,2),
                new peoplecar(4,"金龙",800,20),
                new goodscar(5,"松花江",400,4),
                new goodscar(6,"依维柯",1000,20)
        };
        Scanner input =new Scanner(System.in);
        int num =input.nextInt();
        if(num == 0){
            System.out.println("不租车，正在退出系统！");
            System.exit(0);
        }
        if(num != 1){
            System.out.println("输入有误，正在退出系统！");
            System.exit(0);
        }
        if(num == 1){
            System.out.println("您可租车的类型及其价目表：");
            System.out.println("序号    汽车名称    租金              容量");
            System.out.println("1  奥迪A4  500元/天    载人:4人");
            System.out.println("2  马自达6  400元/天    载人:4人");
            System.out.println("3  皮卡雪6  450元/天    载人:2人 载货:4吨");
            System.out.println("4  金龙              400元/天     载人:20人");
            System.out.println("5  松花江          400元/天      载货:4吨");
            System.out.println("6  依维柯          1000元/天   载货:20吨"); 
            System.out.println("请输入您要租汽车的数量：");
            int num1=input.nextInt();
            int price=0;
            Car[] carlist=new Car[num1];
            for(int i=0;i<num1;i++){
                System.out.println("请输入第"+ (i+1) +"辆车的序号：");
                int j=input.nextInt();
                carlist[i]=car[j-1];
                price+=carlist[i].getCarvalue();
            }
            System.out.println("请输入租车天数：");
            int days=input.nextInt();
            price*=days;//租车价格
            System.out.println("您的账单：");
            System.out.println("***可载人的车有：");
            int loadpeoplenum=0;
            for(int i=0;i<num1;i++){
                if(carlist[i] instanceof peoplecar  carlist[i] instanceof pickup){//如果租的车辆里有peoplecar类或pickup类，就可以载人
                    System.out.print(carlist[i].getCarname() + "\t");
                    loadpeoplenum+=carlist[i].getloadpeople();
                }
            }
            System.out.println("共载人：" + loadpeoplenum + "人");
            System.out.println("载货的车有：");
            int loadgoodsnum=0;
            for(int i=0;i<num1;i++){
                if(carlist[i] instanceof goodscar  carlist[i] instanceof pickup){////如果租的车辆里有goodscar类或pickup类，就可以载货
                    System.out.print(carlist[i].getCarname() + "\t");
                    loadgoodsnum+=carlist[i].getloadgoods();
                }
            }
            System.out.println("共载货：" + loadgoodsnum + "吨");
            System.out.println("租车总价格：" + price + "元");

            }
        }
    }