首页手记课后练习答案-达达租车系统

课后练习答案-达达租车系统

标签：

Java

总结：感觉写主页面还是像是在写面向对象的程序，不知道是不是思维转换不好的原因，如果有朋友有更好的方式可以一起交流啊~
主页面：显示所有的流程

package recentcar;
import java.util.Scanner;
import java.util.ArrayList;
public class View {
    public static void main(String args[]){
        Scanner input=new Scanner(System.in);   //  保存用户输入值
        /********可租车辆信息*********/
        Car cars[]=new Car[7];
        cars[1]=new Coach("奥迪A4",500,4);
        cars[2]=new Coach("马自达6",400,4);
        cars[3]=new Pickup("皮卡雪6",450,4,2);
        cars[4]=new Coach("金龙",800,20);
        cars[5]=new Truck("松花江",400,4);
        cars[6]=new Truck("依维柯",1000,20);

        ArrayList<Car> people=new ArrayList<Car>(); //租车中载人车辆动态数组
        ArrayList<Car> goods=new ArrayList<Car>();  //租车中载货车辆动态数组   

        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");
        int number=input.nextInt();
        if(number==1){
            System.out.println("您可租车的类型及价目表：");
            show(cars);
            System.out.println("请输入您要租汽车的数量：");
            number=input.nextInt();
            int[] order=new int[number+1];      //根据租车数量得到租车序列号数组
            /*************获取用户租车序列号并判断是载人还是载货，放入相应的动态数组中**********************/
            for(int i=1;i<=number;i++){     
                System.out.println("请输入第"+i+"辆车的序号：");
                order[i]=input.nextInt();
                if((cars[order[i]] instanceof Coach)){
                    people.add(cars[order[i]]);
                }
                else if((cars[order[i]] instanceof Truck)){
                    goods.add(cars[order[i]]);
                }
                else if((cars[order[i]] instanceof Pickup)){
                    people.add(cars[order[i]]);
                    goods.add(cars[order[i]]);
                }
            }
            System.out.println("请输入租车天数：");
            int day=input.nextInt();//租车天数

            System.out.println("您的账单：");
            System.out.println("***可载人的车有:");
            /*************输出载人车辆名称*********************/
            for(int i=0;i<people.size();i++){
                Coach outpeople;
                Pickup outpickup;

                if(people.get(i) instanceof Coach){
                    outpeople=(Coach)people.get(i);
                    System.out.print(outpeople.getname());
                }
                else if(people.get(i) instanceof Pickup){
                    outpickup=(Pickup)people.get(i);
                    System.out.print(outpickup.getname());
                }
                System.out.print("\t");
            }
            System.out.println("共载人"+calPerson(people));    //总人数
            /*************输出载货车辆名称*********************/
            System.out.println("***载货的车有:");
            for(int i=0;i<goods.size();i++){
                Truck outtruck;
                Pickup outpickup;
                if(goods.get(i) instanceof Truck){
                    outtruck=(Truck)goods.get(i);
                    System.out.print(outtruck.getname());
                }
                else if(goods.get(i) instanceof Pickup){
                    outpickup=(Pickup)goods.get(i);
                    System.out.print(outpickup.getname());
                }
                System.out.print("\t");
            }
            System.out.println("共载货"+calGoods(goods));//计算载货总量

            System.out.println("***租车总价格："+calMoney(order,cars,day));   //计算总金额     
        }
         input.close();         
    }
    /********************显示可租车辆信息的函数*****************************/
    public static void show(Car[] cars){
        Coach outpeople;
        Pickup outpickup;
        Truck outtruck;
        System.out.println("序号\t汽车名称\t租金\t容量");
        for(int i=1;i<cars.length;i++){
            if(cars[i] instanceof Coach){
                outpeople=(Coach)cars[i];
                System.out.println(i+".\t"+outpeople.getname()+"\t"+outpeople.getmoney()+"元/天\t载人："+outpeople.getbusload());
            }
            else if(cars[i] instanceof Truck){
                outtruck=(Truck)cars[i];
                System.out.println(i+".\t"+outtruck.getname()+"\t"+outtruck.getmoney()+"元/天\t载货："+outtruck.getboatload());
            }
            else if(cars[i] instanceof Pickup){
                outpickup=(Pickup)cars[i];
                System.out.println(i+".\t"+outpickup.getname()+"\t"+outpickup.getmoney()+"元/天\t载人："+outpickup.getbusload()+" 载货："+outpickup.getboatload());
            }

        }

    }
    /********************计算总人数的函数*****************************/
    public static int calPerson(ArrayList<Car> people){
        int total=0;
        Coach outpeople;
        Pickup outpickup;

        for(int i=0;i<people.size();i++){
            if(people.get(i) instanceof Coach){
                outpeople=(Coach)people.get(i);
                total=outpeople.getbusload()+total;
            }
            else if(people.get(i) instanceof Pickup){
                outpickup=(Pickup)people.get(i);
                total=outpickup.getbusload()+total;
            }

        }       
        return total;   
    }
    /********************计算总载货量的函数*****************************/
    public static int calGoods(ArrayList<Car> goods){
        int total=0;
        Truck outtruck;
        Pickup outpickup;

        for(int i=0;i<goods.size();i++){
            if(goods.get(i) instanceof Truck){
                outtruck=(Truck)goods.get(i);
                total=outtruck.getboatload()+total;
            }
            else if(goods.get(i) instanceof Pickup){
                outpickup=(Pickup)goods.get(i);
                total=outpickup.getboatload()+total;
            }
        }
        return total;   
    }
    /********************计算总金额的函数*****************************/
    public static int calMoney(int[] order,Car[] cars,int day){
        int total=0;

        for(int i=1;i<order.length;i++){
            total=cars[order[i]].getmoney()+total;
        }
        total=total*day;
        return total;   
    }
}

父类：

package recentcar;

public class Car {
    private String name;
    private int money;
    Car(String name,int money){
        this.name=name;
        this.money=money;
    }
    public void setmoney(int money){
        this.money=money;       
    }
    public int getmoney(){
        return money;
    }
    public void setname(String name){
        this.name=name;     
    }
    public String getname(){
        return name;
    }
}

三个子类：

客车：Coach

package recentcar;

public class Coach extends Car{
    int busload;
    Coach(String name,int money,int busload){
        super(name,money);
        this.busload=busload;       
    }
    public void setbusload(int busload){
        this.busload=busload;       
    }
    public int getbusload(){
        return busload;
    }
}

货车：Truck

package recentcar;

public class Truck extends Car{
    int boatload;
    Truck(String name,int money,int boatload){
        super(name,money);
        this.boatload=boatload;     
    }
    public void setboatload(int boatload){
        this.boatload=boatload;     
    }
    public int getboatload(){
        return boatload;
    }
}

皮卡：Pickup

package recentcar;

public class Pickup extends Car{
    int busload;
    int boatload;
    Pickup(String name,int money,int busload,int boatload){
        super(name,money);
        this.busload=busload;
        this.boatload=boatload;     
    }
    public void setbusload(int busload){
        this.busload=busload;       
    }
    public int getbusload(){
        return busload;
    }
    public void setboatload(int boatload){
        this.boatload=boatload;     
    }
    public int getboatload(){
        return boatload;
    }
}

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