答答租车系统项目练习

答答租车系统

父类

package dada;

public abstract class Car {
    String name;
    int goods;
    int passenger;
    int price;

    public abstract void run();
    public abstract String getinfo();
    public String getList(){
        String list="     "+this.name+"     "+this.price+"元    ";
        return list;
    }

}

子类1 载客车类

package dada;

public class SmallCar extends Car {
     public SmallCar(String name,int passenger,int price){
            this.name=name;
            this.passenger=passenger;
            this.price=price;
     }
    @Override
    public void run() {
        // TODO Auto-generated method stub

    }
    public String getinfo() {
            // TODO Auto-generated method stub
        String info=this.name+"     "+this.price+"元    "+this.passenger+"人";
        return info;
        }
    }

子类2 货车类

package dada;

public class huoche extends Car {
     public huoche(String name,int goods,int price){
            this.name=name;
            this.goods=goods;
            this.price=price;
     }
    @Override
    public void run() {
        // TODO Auto-generated method stub

    }

    public String getinfo() {
        // TODO Auto-generated method stub
        String info=this.name+"     "+this.price+"元    "+this.goods+"吨";
        return info;
    }

}

子类3 皮卡车类

package dada;

public class pika extends Car {
     public pika(String name,int goods,int passenger,int price){
            this.name=name;
            this.goods=goods;
            this.passenger=passenger;
            this.price=price;
     }
    @Override
    public void run() {
        // TODO Auto-generated method stub

    }

    public String getinfo() {
        String info=this.name+"     "+this.price+"元     "+this.passenger+"人 "+this.goods+"吨 " ;
        return info;

    }

}

主方法

package dada;

import java.util.Scanner;

public class main {
    public static void main(String[] args) {
        while(true){
        System.out.println("欢迎进入答答租车系统");

        System.out.println("是否租车? (1-是 、2-否)");
        Scanner input =new Scanner(System.in);
        int a=input.nextInt();
        if(a==2){
            System.out.println("欢迎下次使用答答租车系统！");
            break;

        }
        //创建实例对象
        else if(a==1){
            Car cars[]={
                    new SmallCar("奥迪A4", 4, 500), 
                    new SmallCar("马自达 ", 4, 400),
                    new pika("皮卡雪 ", 2, 4, 450),
                    new SmallCar("金龙 ", 20, 800),
                    new huoche("松花江 ", 4, 400),
                    new huoche("依维柯 ",20, 1000)
            };
            System.out.println("请选择车类别：1-小客车、2-货车、3-皮卡、4-全部" );

            int b=input.nextInt();
            //显示全部车辆
            if(b==4){
            System.out.println("----------今日可租车清单----------");
            System.out.println("序号     汽车名称     租金/天     容量");
            for(int i=0;i<cars.length;i++){
                System.out.println(i+"    "+cars[i].getinfo());     
            }       
            }
            //显示皮卡车
            if(b==3){
                for(int i=0;i<cars.length;i++){
                    if(cars[i] instanceof pika)
                        System.out.println(i+"    "+cars[i].getinfo());         
                }

            }
            //显示货车
            else if(b==2){
                for(int i=0;i<cars.length;i++){
                    if(cars[i] instanceof huoche)
                        System.out.println(i+"    "+cars[i].getinfo());         
                }
        }
            //显示小汽车
            else if(b==1){
                for(int i=0;i<cars.length;i++){
                    if(cars[i] instanceof SmallCar)
                        System.out.println(i+"    "+cars[i].getinfo());         
                }
        }   

            System.out.println("请选择车辆（输入序号，空格隔开  ）：");
            Scanner scanner = new Scanner(System.in);
            String input3 = scanner.nextLine();
            input3 = input3.trim();
            String[] temp = input3.split(" ");
            int[] nums = new int[temp.length];
            System.out.println("----------租车清单----------");
            System.out.println("序号     名称     租金/天  ");
            int result=0;
            for (int i = 0; i < temp.length; i++) {
                nums[i] = Integer.parseInt(temp[i]);    
                System.out.println(i+cars[nums[i]].getList());
                result=cars[nums[i]].price+result;
            }
            System.out.printf("%50s", "总价格："+result+"\n");
            System.out.println("确定-1 取消-2");

            int c=input.nextInt();
            if(c==1){
                System.out.println("租车成功！欢迎下次使用！");
                break;
            }
            else{
                System.out.println("请重新选择");
            }

        }

        else {
            System.out.println("输入错误！请重新输入");
        }
    }
        }
    }